Recognised as Number
724,009
- Positive
- Odd
- Composite
- 6 digits
724,009 is an odd 6-digit integer and a composite number. It has 16 divisors and a digital root of 4.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value724,009
Digit count6
Digit sum22
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation11 × 13 × 61 × 83
Distinct prime factors411, 13, 61, 83
Number of divisors16
Sum of divisors σ(n)874,944
Aliquot sum150,935sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)590,400integers below n that share no factor with it
Carmichael function λ(n)2,460the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 590,400
Möbius function μ(n)+14 distinct prime factors, an even number of them
SquarefreeYesno repeated prime factor
All divisors1, 11, 13, 61, 83, 143, 671, 793, 913, 1,079, 5,063, 8,723, 11,869, 55,693, 65,819, 724,00916 in total
Arithmetic
Representations
Decimal724,009
Binary1011000011000010100120 bits
Octal2606051
HexadecimalB0C29
Base 36FIND
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsseven hundred and twenty-four thousand and nine
Ordinalseven hundred and twenty-four thousand and ninth
Scientific notation7.24009 × 10^5
Engineering notation724.009 × 10^3
In other bases
Ternary1100210011011base 3; the most digit-efficient integer base after e: 13 digits
Quinary141132014base 5; one hand: 9 digits
Septenary6103546base 7: 7 digits
Nonary1323134base 9; each digit is two ternary digits: 7 digits
Duodecimal2aaba1base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal4aa09base 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal3:21:6:49base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary1101T10011011digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary111110001110001111001base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000010110000110000101001
Bit length20 bitsto write the magnitude
Set bits8the population count, or Hamming weight
Zero bits12within that length
Bit parityeven8 set bits, so even; not the same as the number itself being odd
Highest set bitbit 19worth 524,288
Lowest set bitbit 00 trailing zeros
Power of twoNo
Bytes30b 0c 29
Gray code11101000101000111101n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000010110000110000101001
64-bit0000000000000000000000000000000000000000000010110000110000101001
One's complement11111111111101001111001111010110at 32 bits, every bit flipped
Bits reversed10010100001100001101000000000000at 32 bits
Rotated left by 100000000000101100001100001010010at 32 bits, wrapping
Shifted left by 1101100001100001010010= 1,448,018, no wrap
Shifted right by 11011000011000010100= 362,004, discarding the low bit
These bits as a double3.57707974 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
724,009 to the power 2524,189,032,081
724,009 to the power 3379,517,576,927,932,729
724,009 to the power 4274,774,141,354,015,647,190,561
724,009 to the power 5198,938,951,307,579,514,706,790,879,049
First ten multiples724,009, 1,448,018, 2,172,027, 2,896,036, 3,620,045, 4,344,054, 5,068,063, 5,792,072, 6,516,081, 7,240,090
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 4
Divisible by 6No, remainder 1
Divisible by 7No, remainder 6
Divisible by 8No, remainder 1
Divisible by 9No, remainder 4
Divisible by 10No, remainder 9
Divisible by 11Yes
Divisible by 12No, remainder 1
Divisible by 100No, remainder 9
Collatz (3n + 1) trajectory
Steps to reach 1118the total stopping time
Highest value reached8,246,93211× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps724,009 → 2,172,028 → 1,086,014 → 543,007 → 1,629,022 → 814,511 → 2,443,534 → 1,221,767 → 3,665,302 → 1,832,651 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage72,400,900%
724,009% as a decimal7,240.09
724,009% of 100724,009
724,009% of 1,0007,240,090
As a fraction of 100724,009/100
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Derived from 724,009
Also reads as
#724009 (colour)
- #724009
- Orange
- Dark
- Nearest: Saddle brown
#724009 is a orange with RGB values 114, 64, 9 and HSL 31°, 85%, 24%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.
Colour values
#724009#724009
HEX#724009
RGBrgb(114, 64, 9)
RGB (0–1)0.4471, 0.251, 0.0353
RGB percentages44.7%, 25.1%, 3.5%
HSLhsl(31.4, 85.4%, 24.1%)
HSV / HSBhsv(31.4, 92.1%, 44.7%)
CMYK0%, 43.9%, 92.1%, 55.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,487,497
CSS custom property--colour: #724009;
Brightness & contrast
Relative luminance0.07264WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.56:1
Contrast with white8.56:1WCAG normal text: AAA
Contrast with black2.45:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#8DBFF6
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.56:1WCAG large text: AAA
Contrast with black, large text2.45:1WCAG large text: Fail
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#093B72
Analogous#720C09, #6F7209
Triadic#097240, #400972
Split complementary#096F72, #0B0972
Tetradic#09720C, #093B72, #720970
Tints, shades & saturation
Channel breakdown
R114
G64
B9
Red114 (44.7%)
Green64 (25.1%)
Blue9 (3.5%)
Hue31.43°
Saturation (HSL)85.37%
Lightness24.12%
Dominant channelRed
Hex per channelR 72 · G 40 · B 09
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