21028621056

Names of 21028621056

• Cardinal: 21028621056 can be written as Twenty-one billion, twenty-eight million, six hundred twenty-one thousand and fifty-six.

Scientific notation

• Scientific notation: 2.1028621056 × 10¹⁰

Factors of 21028621056

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 41108

Divisors of 21028621056

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 12 16 23 24 29 32 46 48 58 64 69 87 92 96 116 128 138 174 184 192 232 256 276 348 368 384 464 552 667 696 736 768 928 1104 1334 1392 1472 1856 2001 2208 2668 2784 2944 3712 4002 4416 5336 5568 5888 7424 8004 8832 10672 11136 16008 17664 21344 22272 32016 41051 42688 64032 82102 85376 123153 128064 164204 170752 246306 256128 328408 492612 512256 656816 944173 985224 1190479 1313632 1888346 1970448 2380958 2627264 2832519 3571437 3776692 3940896 4761916 5254528 5665038 7142874 7553384 7881792 9523832 10509056 11330076 14285748 15106768 15763584 19047664 22660152 27381017 28571496 30213536 31527168 38095328 45320304 54762034 57142992 60427072 76190656 82143051 90640608 109524068 114285984 120854144 152381312 164286102 181281216 219048136 228571968 241708288 304762624 328572204 362562432 438096272 457143936 657144408 725124864 876192544 914287872 1314288816 1752385088 2628577632 3504770176 5257155264 7009540352 10514310528 21028621056
• Sum of all divisors σ(n): 60415407360
• Sum of proper divisors (its aliquot sum) s(n): 39386786304
• 21028621056 is an abundant number, because the sum of its proper divisors (39386786304) is greater than itself. Its abundance is 18358165248

Bases of 21028621056

• Binary: 10011100101011001110100101100000000₂
• Hexadecimal: 0x4E5674B00
• Base-36: 9NRWBUO

Squares and roots of 21028621056

• 21028621056 squared (21028621056²) is 442202903516846555136
• 21028621056 cubed (21028621056³) is 9298917287918695920053954543616
• The square root of 21028621056 is 145012.4858624249
• The cube root of 21028621056 is 2760.1769934805

Scales and comparisons

• 21,028,621,056 seconds is equal to 668 years, 33 weeks, 3 days, 19 hours, 37 minutes, 36 seconds.
• To count from 1 to 21,028,621,056 would take you about one thousand, three hundred thirty-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 21028621056 cubic inches would be around 230 feet tall.

Recreational maths with 21028621056

• 21028621056 backwards is 65012682012
• The number of decimal digits it has is: 11
• The sum of 21028621056's digits is 33
• More coming soon!