21390949448
21,390,949,448 is an even composite number composed of six prime numbers multiplied together.
21390949448 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21390949448:
23 × 11 × 17 × 47 × 79 × 3851
(2 × 2 × 2 × 11 × 17 × 47 × 79 × 3851)See below for interesting mathematical facts about the number 21390949448 from the Numbermatics database.
Names of 21390949448
- Cardinal: 21390949448 can be written as Twenty-one billion, three hundred ninety million, nine hundred forty-nine thousand, four hundred forty-eight.
Scientific notation
- Scientific notation: 2.1390949448 × 1010
Factors of 21390949448
Divisors of 21390949448
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 8 11 17 22 34 44 47 68 79 88 94 136 158 187 188 316 374 376 517 632 748 799 869 1034 1343 1496 1598 1738 2068 2686 3196 3476 3713 3851 4136 5372 6392 6952 7426 7702 8789 10744 14773 14852 15404 17578 29546 29704 30808 35156 40843 42361 59092 63121 65467 70312 81686 84722 118184 126242 130934 163372 169444 180997 252484 261868 304229 326744 338888 361994 504968 523736 608458 694331 720137 723988 1216916 1388662 1440274 1447976 1990967 2433832 2777324 2880548 3076949 3346519 3981934 5171893 5554648 5761096 6153898 6693038 7963868 10343786 12307796 13386076 14298763 15927736 20687572 24615592 26772152 28597526 33846439 41375144 56890823 57195052 67692878 113781646 114390104 135385756 157286393 227563292 243078971 270771512 314572786 455126584 486157942 629145572 972315884 1258291144 1944631768 2673868681 5347737362 10695474724 21390949448
- Sum of all divisors σ(n): 47925043200
- Sum of proper divisors (its aliquot sum) s(n): 26534093752
- 21390949448 is an abundant number, because the sum of its proper divisors (26534093752) is greater than itself. Its abundance is 5143144304
Bases of 21390949448
- Binary: 100111110101111111111111100010010002
- Hexadecimal: 0x4FAFFFC48
- Base-36: 9TRMA88
Squares and roots of 21390949448
- 21390949448 squared (213909494482) is 457572718286891504704
- 21390949448 cubed (213909494483) is 9787914885658841338183918203392
-
The
square root of 21390949448 is 146256.4509620003 -
The
cube root of 21390949448 is 2775.9396519393
Scales and comparisons
How big is 21390949448?- 21,390,949,448 seconds is equal to 680 years, 8 weeks, 4 days, 10 hours, 24 minutes, 8 seconds.
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To count from 1 to 21,390,949,448 would take you about one thousand, three hundred sixty 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 21390949448 cubic inches would be around 231.3 feet tall.
Recreational maths with 21390949448
- 21390949448 backwards is 84494909312
- The number of decimal digits it has is: 11
- The sum of 21390949448's digits is 53
- More coming soon!
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