21156431616
21,156,431,616 is an even composite number composed of five prime numbers multiplied together.
21156431616 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21156431616:
28 × 32 × 31 × 139 × 2131
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 31 × 139 × 2131)See below for interesting mathematical facts about the number 21156431616 from the Numbermatics database.
Names of 21156431616
- Cardinal: 21156431616 can be written as Twenty-one billion, one hundred fifty-six million, four hundred thirty-one thousand, six hundred sixteen.
Scientific notation
- Scientific notation: 2.1156431616 × 1010
Factors of 21156431616
Divisors of 21156431616
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 62 64 72 93 96 124 128 139 144 186 192 248 256 278 279 288 372 384 417 496 556 558 576 744 768 834 992 1112 1116 1152 1251 1488 1668 1984 2131 2224 2232 2304 2502 2976 3336 3968 4262 4309 4448 4464 5004 5952 6393 6672 7936 8524 8618 8896 8928 10008 11904 12786 12927 13344 17048 17236 17792 17856 19179 20016 23808 25572 25854 26688 34096 34472 35584 35712 38358 38781 40032 51144 51708 53376 66061 68192 68944 71424 76716 77562 80064 102288 103416 106752 132122 136384 137888 153432 155124 160128 198183 204576 206832 264244 272768 275776 296209 306864 310248 320256 396366 409152 413664 528488 545536 551552 592418 594549 613728 620496 792732 818304 827328 888627 1056976 1103104 1184836 1189098 1227456 1240992 1585464 1636608 1654656 1777254 2113952 2369672 2378196 2454912 2481984 2665881 3170928 3309312 3554508 4227904 4739344 4756392 4909824 4963968 5331762 6341856 7109016 8455808 9182479 9478688 9512784 9927936 10663524 12683712 14218032 16911616 18364958 18957376 19025568 21327048 25367424 27547437 28436064 36729916 37914752 38051136 42654096 50734848 55094874 56872128 73459832 75829504 76102272 82642311 85308192 110189748 113744256 146919664 152204544 165284622 170616384 220379496 227488512 293839328 330569244 341232768 440758992 587678656 661138488 682465536 881517984 1175357312 1322276976 1763035968 2350714624 2644553952 3526071936 5289107904 7052143872 10578215808 21156431616
- Sum of all divisors σ(n): 63449684480
- Sum of proper divisors (its aliquot sum) s(n): 42293252864
- 21156431616 is an abundant number, because the sum of its proper divisors (42293252864) is greater than itself. Its abundance is 21136821248
Bases of 21156431616
- Binary: 100111011010000010110000111000000002
- Hexadecimal: 0x4ED058700
- Base-36: 9PVZR40
Squares and roots of 21156431616
- 21156431616 squared (211564316162) is 447594598722484371456
- 21156431616 cubed (211564316163) is 9469504519563201566337606352896
-
The
square root of 21156431616 is 145452.5063929803 -
The
cube root of 21156431616 is 2765.7577595855
Scales and comparisons
How big is 21156431616?- 21,156,431,616 seconds is equal to 672 years, 36 weeks, 6 days, 2 hours, 33 minutes, 36 seconds.
-
To count from 1 to 21,156,431,616 would take you about one thousand, three hundred forty-five years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21156431616 cubic inches would be around 230.5 feet tall.
Recreational maths with 21156431616
- 21156431616 backwards is 61613465112
- 21156431616 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21156431616's digits is 36
- More coming soon!
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