Number

1,590

Positive
Even
Composite
4 digits

1,590 is an even 4-digit integer and a composite number. It has 16 divisors and a digital root of 6.

Number properties

ParityEvendivisible by 2

SignPositive

PrimalityComposite

Absolute value1,590

Digit count4

Digit sum15

Digital root6repeated digit sum

PalindromicNoreads differently backwards

Happy numberNosquared-digit sums reach 1

Harshad numberYesdivisible by its own digit sum

Factors & divisors

Prime factorisation2 × 3 × 5 × 53

Distinct prime factors42, 3, 5, 53

Number of divisors16

Sum of divisors σ(n)3,888

Aliquot sum2,298sum of the proper divisors

ClassificationAbundantthe aliquot sum exceeds the number

Euler's totient φ(n)416integers below n that share no factor with it

SquarefreeYesno repeated prime factor

All divisors1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1,59016 in total

Arithmetic

Previous number1,589

Next number1,591

Double3,180

Half795

Square2,528,100

Cube4,019,679,000

Square root39.874804075≈irrational, shown to 9 decimal places

Cube root11.671653197≈

Negation-1,590

Reciprocal0.0006289308≈

Representations

Decimal1,590

Binary1100011011011 bits

Octal3066

Hexadecimal636

Base 36186

Roman numeralMDXC

In wordsone thousand, five hundred and ninety

Ordinalone thousand, five hundred and ninetieth

Scientific notation1.59 × 10^3

Engineering notation1.59 × 10^3

Nearest landmarks

Next prime1,597+7

Previous prime1,583−7

Distance to nearest prime7

Nearest square below1,521

Nearest square above1,600

Powers & multiples

1,590 to the power 22,528,100

1,590 to the power 34,019,679,000

1,590 to the power 46,391,289,610,000

1,590 to the power 510,162,150,479,900,000

First ten multiples1,590, 3,180, 4,770, 6,360, 7,950, 9,540, 11,130, 12,720, 14,310, 15,900

Powers of twoBetween 2^10 (1,024) and 2^11 (2,048)

Divisibility tests

Divisible by 2Yes

Divisible by 3Yes

Divisible by 4No, remainder 2

Divisible by 5Yes

Divisible by 6Yes

Divisible by 7No, remainder 1

Divisible by 8No, remainder 6

Divisible by 9No, remainder 6

Divisible by 10Yes

Divisible by 11No, remainder 6

Divisible by 12No, remainder 6

Divisible by 100No, remainder 90

Collatz (3n + 1) trajectory

Steps to reach 1104the total stopping time

Highest value reached39,36424× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps1,590 → 795 → 2,386 → 1,193 → 3,580 → 1,790 → 895 → 2,686 → 1,343 → 4,030 → …

Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage159,000%

1,590% as a decimal15.9

1,590% of 1001,590

1,590% of 1,00015,900

As a fraction of 1001,590/100

Read another way

As seconds26 minutes and 30 seconds

As bytes1.553 KiB

As a year1590 AD

As a 24-bit colour#000636

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Neighbouring numbers

Derived from 1,590

Nearby primes

1590 (year)

Common year
365 days
16th century
Tiger

1590 was a common year of 365 days. It began on a Monday and ended on a Monday. Easter Sunday fell on 22 April.

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Structure of the year

Leap yearNonot divisible by 4

Days in the year365

Weeks in the year52ISO 8601 weeks; 28 December is always in the final week

Days in February28

1 January fell on aMonday

31 December fell on aMonday

Century16th century

Decade1590s

Chinese zodiacTiger

Easter Sunday22 April

Months of 1590

January31 days, starts Monday

February28 days, starts Thursday

March31 days, starts Thursday

April30 days, starts Sunday

May31 days, starts Tuesday

June30 days, starts Friday

July31 days, starts Sunday

August31 days, starts Wednesday

September30 days, starts Saturday

October31 days, starts Monday

November30 days, starts Thursday

December31 days, starts Saturday

Time references

These values depend on today’s date and change daily.

Unix timestamp at the start-11,991,628,800

Unix timestamp at the end-11,960,092,801

Years from now436 years ago

Days from today159,498 days since 1 January

The number 1590

As a number1,590

In wordsone thousand, five hundred and ninety

Roman numeralsMDXC

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Neighbouring years

Key dates

Also reads as

#115599 (colour)

#115599
Blue
Dark
Nearest: Dark slateblue

#115599 is a blue with RGB values 17, 85, 153 and HSL 210°, 80%, 33%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

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Colour values

#115599#115599

HEX#115599

HEX (short)#159

RGBrgb(17, 85, 153)

RGB (0–1)0.0667, 0.3333, 0.6

RGB percentages6.7%, 33.3%, 60%

HSLhsl(210, 80%, 33.3%)

HSV / HSBhsv(210, 88.9%, 60%)

CMYK88.9%, 44.4%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,136,025

CSS custom property--colour: #115599;

Brightness & contrast

Relative luminance0.08916WCAG 2.x, 0 is black and 1 is white

Perceived brightness83.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.55:1

Contrast with white7.55:1WCAG normal text: AAA

Contrast with black2.78:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#EEAA66

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#315B9Cno red cones; affects about 1% of men; ΔE 4.4 from the original

Deuteranopia#154F98no green cones; the most common form, about 1% of men; ΔE 4.9 from the original

Tritanopia#00656Fno blue cones; rare, and affects men and women equally; ΔE 40.7 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text7.55:1WCAG large text: AAA

Contrast with black, large text2.78:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.2 Steel blue · ΔE 22.3 Cornflower blue · ΔE 27.1 Dodgerblue · ΔE 31.5 Royal blue · ΔE 32.3 Midnight blue · ΔE 32.9

Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.25, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#995511

Analogous#119999, #111199

Triadic#991155, #559911

Split complementary#991111, #999911

Tetradic#991199, #995511, #119911

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#85BBF1

Lighter +30%#57A2EC

Lighter +20%#2988E7

Lighter +10%#166EC7

Darker −10%#0C3B6B

Darker −20%#07223D

Darker −30%#02080F

Darker −40%#000000

More saturated +25%#0055AA

Less saturated −25%#265584

Channel breakdown

R17

G85

B153

Red17 (6.7%)

Green85 (33.3%)

Blue153 (60%)

Hue210°

Saturation (HSL)80%

Lightness33.33%

Dominant channelBlue

Hex per channelR 11 · G 55 · B 99

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1,590

Number properties

Factors & divisors

Arithmetic

Representations

Nearest landmarks

Powers & multiples

Divisibility tests

Collatz (3n + 1) trajectory

As a percentage & fraction

Read another way

Keep nerding

Neighbouring numbers

Derived from 1,590

Nearby primes

Other readings

1590 (year)

Structure of the year

Months of 1590

Time references

The number 1590

Keep nerding

Neighbouring years

Key dates

#115599 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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