Recognised as Number
980,990
- Positive
- Even
- Composite
- 6 digits
980,990 is an even 6-digit integer and a composite number. It has 16 divisors and a digital root of 8.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value980,990
Digit count6
Digit sum35
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root8repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 5 × 263 × 373
Distinct prime factors42, 5, 263, 373
Number of divisors16
Sum of divisors σ(n)1,777,248
Aliquot sum796,258sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)389,856integers below n that share no factor with it
Carmichael function λ(n)48,732the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 389,856
Möbius function μ(n)+14 distinct prime factors, an even number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 5, 10, 263, 373, 526, 746, 1,315, 1,865, 2,630, 3,730, 98,099, 196,198, 490,495, 980,99016 in total
Arithmetic
Representations
Decimal980,990
Binary1110111101111111111020 bits
Octal3573776
HexadecimalEF7FE
Base 36L0XQ
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsnine hundred and eighty thousand, nine hundred and ninety
Ordinalnine hundred and eighty thousand, nine hundred and ninetieth
Scientific notation9.8099 × 10^5
Engineering notation980.99 × 10^3
In other bases
Ternary1211211122222base 3; the most digit-efficient integer base after e: 13 digits
Quinary222342430base 5; one hand: 9 digits
Septenary11224013base 7: 8 digits
Nonary1754588base 9; each digit is two ternary digits: 7 digits
Duodecimal3b3852base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal62c9abase 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal4:32:29:50base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary1T0TT0TTT0000Tdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary100110000100000000010base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000011101111011111111110
Bit length20 bitsto write the magnitude
Set bits17the population count, or Hamming weight
Zero bits3within that length
Bit parityodd17 set bits, so odd; not the same as the number itself being even
Highest set bitbit 19worth 524,288
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes30e f7 fe
Gray code10011000110000000001n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000011101111011111111110
64-bit0000000000000000000000000000000000000000000011101111011111111110
One's complement11111111111100010000100000000001at 32 bits, every bit flipped
Bits reversed01111111111011110111000000000000at 32 bits
Rotated left by 100000000000111011110111111111100at 32 bits, wrapping
Shifted left by 1111011110111111111100= 1,961,980, no wrap
Shifted right by 11110111101111111111= 490,495, discarding the low bit
These bits as a double4.84673458 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
980,990 to the power 2962,341,380,100
980,990 to the power 3944,047,270,464,299,000
980,990 to the power 4926,100,931,852,772,676,010,000
980,990 to the power 5908,495,753,138,251,467,439,049,900,000
First ten multiples980,990, 1,961,980, 2,942,970, 3,923,960, 4,904,950, 5,885,940, 6,866,930, 7,847,920, 8,828,910, 9,809,900
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4No, remainder 2
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 3
Divisible by 8No, remainder 6
Divisible by 9No, remainder 8
Divisible by 10Yes
Divisible by 11No, remainder 10
Divisible by 12No, remainder 2
Divisible by 100No, remainder 90
Collatz (3n + 1) trajectory
Steps to reach 1276the total stopping time
Highest value reached543,675,076554× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps980,990 → 490,495 → 1,471,486 → 735,743 → 2,207,230 → 1,103,615 → 3,310,846 → 1,655,423 → 4,966,270 → 2,483,135 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage98,099,000%
980,990% as a decimal9,809.9
980,990% of 100980,990
980,990% of 1,0009,809,900
As a fraction of 100980,990/100
Read another way
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Derived from 980,990
Also reads as
#980990 (colour)
- #980990
- Magenta
- Dark
- Nearest: Dark magenta
#980990 is a magenta with RGB values 152, 9, 144 and HSL 303°, 89%, 32%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark magenta.
Colour values
#980990#980990
HEX#980990
RGBrgb(152, 9, 144)
RGB (0–1)0.5961, 0.0353, 0.5647
RGB percentages59.6%, 3.5%, 56.5%
HSLhsl(303.4, 88.8%, 31.6%)
HSV / HSBhsv(303.4, 94.1%, 59.6%)
CMYK0%, 94.1%, 5.3%, 40.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,963,920
CSS custom property--colour: #980990;
Brightness & contrast
Relative luminance0.08884WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.56:1
Contrast with white7.56:1WCAG normal text: AAA
Contrast with black2.78:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#67F66F
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.56:1WCAG large text: AAA
Contrast with black, large text2.78:1WCAG large text: Fail
Named colours
Hue familymagenta
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#099811
Analogous#590998, #980948
Triadic#909809, #099098
Split complementary#489809, #099859
Tetradic#985909, #099811, #094898
Tints, shades & saturation
Channel breakdown
R152
G9
B144
Red152 (59.6%)
Green9 (3.5%)
Blue144 (56.5%)
Hue303.36°
Saturation (HSL)88.82%
Lightness31.57%
Dominant channelRed
Hex per channelR 98 · G 09 · B 90
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Harmonies
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