21381243312
21,381,243,312 is an even composite number composed of seven prime numbers multiplied together.
21381243312 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21381243312:
24 × 3 × 11 × 13 × 71 × 73 × 601
(2 × 2 × 2 × 2 × 3 × 11 × 13 × 71 × 73 × 601)See below for interesting mathematical facts about the number 21381243312 from the Numbermatics database.
Names of 21381243312
- Cardinal: 21381243312 can be written as Twenty-one billion, three hundred eighty-one million, two hundred forty-three thousand, three hundred twelve.
Scientific notation
- Scientific notation: 2.1381243312 × 1010
Factors of 21381243312
Divisors of 21381243312
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 6 8 11 12 13 16 22 24 26 33 39 44 48 52 66 71 73 78 88 104 132 142 143 146 156 176 208 213 219 264 284 286 292 312 426 429 438 528 568 572 584 601 624 781 803 852 858 876 923 949 1136 1144 1168 1202 1562 1606 1704 1716 1752 1803 1846 1898 2288 2343 2404 2409 2769 2847 3124 3212 3408 3432 3504 3606 3692 3796 4686 4808 4818 5183 5538 5694 6248 6424 6611 6864 7212 7384 7592 7813 9372 9616 9636 10153 10366 10439 11076 11388 12496 12848 13222 14424 14768 15184 15549 15626 18744 19272 19833 20306 20732 20878 22152 22776 23439 26444 28848 30459 31098 31252 31317 37488 38544 39666 40612 41464 41756 42671 43873 44304 45552 46878 52888 57013 60918 62196 62504 62634 67379 79332 81224 82928 83512 85342 85943 87746 93756 105776 114026 121836 124392 125008 125268 128013 131619 134758 158664 162448 167024 170684 171039 171886 175492 187512 202137 228052 243672 248784 250536 256026 257829 263238 269516 317328 341368 342078 343772 350984 375024 404274 456104 469381 482603 487344 501072 512052 515658 526476 539032 554723 570349 682736 684156 687544 701968 741169 808548 912208 938762 965206 1024104 1031316 1052952 1078064 1109446 1140698 1368312 1375088 1408143 1447809 1482338 1617096 1664169 1711047 1877524 1930412 2048208 2062632 2105904 2218892 2223507 2281396 2736624 2816286 2895618 2964676 3114983 3234192 3328338 3422094 3755048 3860824 4125264 4437784 4447014 4562792 5632572 5791236 5929352 6101953 6229966 6273839 6656676 6844188 7510096 7721648 8875568 8894028 9125584 9344949 11265144 11582472 11858704 12203906 12459932 12547678 13313352 13688376 17788056 18305859 18689898 18821517 22530288 23164944 24407812 24919864 25095356 26626704 27376752 34264813 35576112 36611718 37379796 37643034 40494779 48815624 49839728 50190712 68529626 73223436 74759592 75286068 80989558 97631248 100381424 102794439 121484337 137059252 146446872 149519184 150572136 161979116 205588878 242968674 274118504 292893744 301144272 323958232 411177756 445442569 485937348 548237008 647916464 822355512 890885138 971874696 1336327707 1644711024 1781770276 1943749392 2672655414 3563540552 5345310828 7127081104 10690621656 21381243312
- Sum of all divisors σ(n): 66817723392
- Sum of proper divisors (its aliquot sum) s(n): 45436480080
- 21381243312 is an abundant number, because the sum of its proper divisors (45436480080) is greater than itself. Its abundance is 24055236768
Bases of 21381243312
- Binary: 100111110100110101111100001101100002
- Hexadecimal: 0x4FA6BE1B0
- Base-36: 9TLU8XC
Squares and roots of 21381243312
- 21381243312 squared (213812433122) is 457157565566944729344
- 21381243312 cubed (213812433123) is 9774597141308438482560050147328
-
The
square root of 21381243312 is 146223.2652897617 -
The
cube root of 21381243312 is 2775.5197278637
Scales and comparisons
How big is 21381243312?- 21,381,243,312 seconds is equal to 679 years, 44 weeks, 4 days, 2 hours, 15 minutes, 12 seconds.
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To count from 1 to 21,381,243,312 would take you about one thousand, three hundred fifty-nine 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 21381243312 cubic inches would be around 231.3 feet tall.
Recreational maths with 21381243312
- 21381243312 backwards is 21334218312
- The number of decimal digits it has is: 11
- The sum of 21381243312's digits is 30
- More coming soon!
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