21507446740

Names of 21507446740

• Cardinal: 21507446740 can be written as Twenty-one billion, five hundred seven million, four hundred forty-six thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.150744674 × 10¹⁰

Factors of 21507446740

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 83727

Divisors of 21507446740

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 10 13 20 23 26 43 46 52 65 86 92 115 130 172 215 230 260 299 430 460 559 598 860 989 1118 1196 1495 1978 2236 2795 2990 3956 4945 5590 5980 9890 11180 12857 19780 25714 51428 64285 83641 128570 167282 257140 334564 418205 836410 1087333 1672820 1923743 2174666 3596563 3847486 4349332 5436665 7193126 7694972 9618715 10873330 14386252 17982815 19237430 21746660 25008659 35965630 38474860 46755319 50017318 71931260 82720949 93510638 100034636 125043295 165441898 187021276 233776595 250086590 330883796 413604745 467553190 500173180 827209490 935106380 1075372337 1654418980 2150744674 4301489348 5376861685 10753723370 21507446740
• Sum of all divisors σ(n): 51935659776
• Sum of proper divisors (its aliquot sum) s(n): 30428213036
• 21507446740 is an abundant number, because the sum of its proper divisors (30428213036) is greater than itself. Its abundance is 8920766296

Bases of 21507446740

• Binary: 10100000001111100011001011111010100₂
• Hexadecimal: 0x501F197D4
• Base-36: 9VOZ844

Squares and roots of 21507446740

• 21507446740 squared (21507446740²) is 462570265273936627600
• 21507446740 cubed (21507446740³) is 9948705343886863528242214024000
• The square root of 21507446740 is 146654.1739603753
• The cube root of 21507446740 is 2780.9698813853

Scales and comparisons

• 21,507,446,740 seconds is equal to 683 years, 45 weeks, 1 day, 18 hours, 45 minutes, 40 seconds.
• To count from 1 to 21,507,446,740 would take you about one thousand, three hundred sixty-seven 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 21507446740 cubic inches would be around 231.7 feet tall.

Recreational maths with 21507446740

• 21507446740 backwards is 04764470512
• The number of decimal digits it has is: 11
• The sum of 21507446740's digits is 40
• More coming soon!