21315257136

Names of 21315257136

• Cardinal: 21315257136 can be written as Twenty-one billion, three hundred fifteen million, two hundred fifty-seven thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 2.1315257136 × 10¹⁰

Factors of 21315257136

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1212

Divisors of 21315257136

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 211 216 379 422 432 617 633 758 844 1137 1234 1266 1516 1688 1851 1899 2274 2468 2532 3032 3376 3411 3702 3798 4548 4936 5064 5553 5697 6064 6822 7404 7596 9096 9872 10128 10233 11106 11394 13644 14808 15192 16659 18192 20466 22212 22788 27288 29616 30384 33318 40932 44424 45576 54576 66636 79969 81864 88848 91152 130187 133272 159938 163728 233843 239907 260374 266544 319876 390561 467686 479814 520748 639752 701529 719721 781122 935372 959628 1041496 1171683 1279504 1403058 1439442 1562244 1870744 1919256 2082992 2104587 2159163 2343366 2806116 2878884 3124488 3515049 3741488 3838512 4209174 4318326 4686732 5612232 5757768 6248976 6313761 7030098 8418348 8636652 9373464 11224464 11515536 12627522 14060196 16836696 17273304 18746928 25255044 28120392 33673392 34546608 49340873 50510088 56240784 98681746 101020176 148022619 197363492 296045238 394726984 444067857 592090476 789453968 888135714 1184180952 1332203571 1776271428 2368361904 2664407142 3552542856 5328814284 7105085712 10657628568 21315257136
• Sum of all divisors σ(n): 61734739200
• Sum of proper divisors (its aliquot sum) s(n): 40419482064
• 21315257136 is an abundant number, because the sum of its proper divisors (40419482064) is greater than itself. Its abundance is 19104224928

Bases of 21315257136

• Binary: 10011110110011111010000001100110000₂
• Hexadecimal: 0x4F67D0330
• Base-36: 9SIJXO0

Squares and roots of 21315257136

• 21315257136 squared (21315257136²) is 454340186773798922496
• 21315257136 cubed (21315257136³) is 9684377908301790300561974931456
• The square root of 21315257136 is 145997.4559230399
• The cube root of 21315257136 is 2772.6615426021

Scales and comparisons

• 21,315,257,136 seconds is equal to 677 years, 39 weeks, 3 days, 8 hours, 45 minutes, 36 seconds.
• To count from 1 to 21,315,257,136 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 21315257136 cubic inches would be around 231.1 feet tall.

Recreational maths with 21315257136

• 21315257136 backwards is 63175251312
• 21315257136 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21315257136's digits is 36
• More coming soon!