21291425792

Names of 21291425792

• Cardinal: 21291425792 can be written as Twenty-one billion, two hundred ninety-one million, four hundred twenty-five thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 2.1291425792 × 10¹⁰

Factors of 21291425792

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 22

Divisors of 21291425792

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 52 56 64 91 104 112 128 169 182 208 224 256 338 364 416 448 512 676 728 832 896 1024 1183 1352 1456 1664 1792 2048 2197 2366 2704 2912 3328 3584 4096 4394 4732 5408 5824 6656 7168 8192 8788 9464 10816 11648 13312 14336 15379 17576 18928 21632 23296 26624 28561 28672 30758 35152 37856 43264 46592 53248 57122 57344 61516 70304 75712 86528 93184 106496 114244 123032 140608 151424 173056 186368 199927 228488 246064 281216 302848 346112 371293 372736 399854 456976 492128 562432 605696 692224 742586 745472 799708 913952 984256 1124864 1211392 1384448 1485172 1599416 1827904 1968512 2249728 2422784 2599051 2970344 3198832 3655808 3937024 4499456 4845568 5198102 5940688 6397664 7311616 7874048 8998912 9691136 10396204 11881376 12795328 14623232 15748096 17997824 20792408 23762752 25590656 29246464 31496192 41584816 47525504 51181312 58492928 62992384 83169632 95051008 102362624 116985856 125984768 166339264 190102016 204725248 233971712 332678528 380204032 409450496 665357056 760408064 818900992 1330714112 1520816128 1637801984 2661428224 3041632256 5322856448 10645712896 21291425792
• Sum of all divisors σ(n): 52718396976
• Sum of proper divisors (its aliquot sum) s(n): 31426971184
• 21291425792 is an abundant number, because the sum of its proper divisors (31426971184) is greater than itself. Its abundance is 10135545392

Bases of 21291425792

• Binary: 10011110101000100010110000000000000₂
• Hexadecimal: 0x4F5116000
• Base-36: 9S4D5A8

Squares and roots of 21291425792

• 21291425792 squared (21291425792²) is 453324812256242827264
• 21291425792 cubed (21291425792³) is 9651931599826126245423730393088
• The square root of 21291425792 is 145915.8174839177
• The cube root of 21291425792 is 2771.6278402915

Scales and comparisons

• 21,291,425,792 seconds is equal to 677 years, 12 hours, 56 minutes, 32 seconds.
• To count from 1 to 21,291,425,792 would take you about one thousand, three hundred fifty-four 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 21291425792 cubic inches would be around 231 feet tall.

Recreational maths with 21291425792

• 21291425792 backwards is 29752419212
• The number of decimal digits it has is: 11
• The sum of 21291425792's digits is 44
• More coming soon!