21311013760

Names of 21311013760

• Cardinal: 21311013760 can be written as Twenty-one billion, three hundred eleven million, thirteen thousand, seven hundred sixty.

Scientific notation

• Scientific notation: 2.131101376 × 10¹⁰

Factors of 21311013760

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 107387

Divisors of 21311013760

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 311 320 622 640 1244 1555 2488 3110 4976 6220 9952 12440 19904 24880 39808 49760 99520 107069 199040 214138 428276 535345 856552 1070690 1713104 2141380 3426208 4282760 6852416 8565520 13704832 17131040 33298459 34262080 66596918 68524160 133193836 166492295 266387672 332984590 532775344 665969180 1065550688 1331938360 2131101376 2663876720 4262202752 5327753440 10655506880 21311013760
• Sum of all divisors σ(n): 51110935200
• Sum of proper divisors (its aliquot sum) s(n): 29799921440
• 21311013760 is an abundant number, because the sum of its proper divisors (29799921440) is greater than itself. Its abundance is 8488907680

Bases of 21311013760

• Binary: 10011110110001111000100001110000000₂
• Hexadecimal: 0x4F63C4380
• Base-36: 9SG0ZGG

Squares and roots of 21311013760

• 21311013760 squared (21311013760²) is 454159307478909337600
• 21311013760 cubed (21311013760³) is 9678595250915107803386085376000
• The square root of 21311013760 is 145982.9228368853
• The cube root of 21311013760 is 2772.4775394065

Scales and comparisons

• 21,311,013,760 seconds is equal to 677 years, 32 weeks, 3 days, 6 hours, 2 minutes, 40 seconds.
• To count from 1 to 21,311,013,760 would take you about one thousand, three hundred fifty-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 21311013760 cubic inches would be around 231 feet tall.

Recreational maths with 21311013760

• 21311013760 backwards is 06731011312
• The number of decimal digits it has is: 11
• The sum of 21311013760's digits is 25
• More coming soon!