21979787040

Names of 21979787040

• Cardinal: 21979787040 can be written as Twenty-one billion, nine hundred seventy-nine million, seven hundred eighty-seven thousand and forty.

Scientific notation

• Scientific notation: 2.197978704 × 10¹⁰

Factors of 21979787040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 45640

Divisors of 21979787040

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 240 288 337 360 480 674 720 1011 1348 1440 1685 2022 2696 3033 3370 4044 5055 5392 6066 6740 8088 10110 10784 12132 13480 15165 16176 20220 24264 26960 30330 32352 40440 45293 48528 53920 60660 80880 90586 97056 121320 135879 161760 181172 226465 242640 271758 362344 407637 452930 485280 543516 679395 724688 815274 905860 1087032 1358790 1449376 1630548 1811720 2038185 2174064 2717580 3261096 3623440 4076370 4348128 5435160 6522192 7246880 8152740 10870320 13044384 15263741 16305480 21740640 30527482 32610960 45791223 61054964 65221920 76318705 91582446 122109928 137373669 152637410 183164892 228956115 244219856 274747338 305274820 366329784 457912230 488439712 549494676 610549640 686868345 732659568 915824460 1098989352 1221099280 1373736690 1465319136 1831648920 2197978704 2442198560 2747473380 3663297840 4395957408 5494946760 7326595680 10989893520 21979787040
• Sum of all divisors σ(n): 75230254008
• Sum of proper divisors (its aliquot sum) s(n): 53250466968
• 21979787040 is an abundant number, because the sum of its proper divisors (53250466968) is greater than itself. Its abundance is 31270679928

Bases of 21979787040

• Binary: 10100011110000110001110111100100000₂
• Hexadecimal: 0x51E18EF20
• Base-36: A3I7480

Squares and roots of 21979787040

• 21979787040 squared (21979787040²) is 483111038323751961600
• 21979787040 cubed (21979787040³) is 10618677739029346689750257664000
• The square root of 21979787040 is 148255.8162096853
• The cube root of 21979787040 is 2801.1809236341

Scales and comparisons

• 21,979,787,040 seconds is equal to 698 years, 46 weeks, 1 day, 16 hours, 24 minutes.
• To count from 1 to 21,979,787,040 would take you about one thousand, three hundred ninety-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 21979787040 cubic inches would be around 233.4 feet tall.

Recreational maths with 21979787040

• 21979787040 backwards is 04078797912
• The number of decimal digits it has is: 11
• The sum of 21979787040's digits is 54
• More coming soon!