21072064

Names of 21072064

• Cardinal: 21072064 can be written as Twenty-one million, seventy-two thousand and sixty-four.

Scientific notation

• Scientific notation: 2.1072064 × 10⁷

Factors of 21072064

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 108

Divisors of 21072064

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 13 16 19 26 31 32 38 43 52 62 64 76 86 104 124 152 172 208 247 248 304 344 403 416 494 496 559 589 608 688 806 817 832 988 992 1118 1178 1216 1333 1376 1612 1634 1976 1984 2236 2356 2666 2752 3224 3268 3952 4472 4712 5332 6448 6536 7657 7904 8944 9424 10621 10664 12896 13072 15314 15808 17329 17888 18848 21242 21328 25327 25792 26144 30628 34658 35776 37696 42484 42656 50654 52288 61256 69316 84968 85312 101308 122512 138632 169936 202616 245024 277264 329251 339872 405232 490048 554528 658502 679744 810464 1109056 1317004 1620928 2634008 5268016 10536032 21072064
• Sum of all divisors σ(n): 50068480
• Sum of proper divisors (its aliquot sum) s(n): 28996416
• 21072064 is an abundant number, because the sum of its proper divisors (28996416) is greater than itself. Its abundance is 7924352

Bases of 21072064

• Binary: 1010000011000100011000000₂
• Hexadecimal: 0x14188C0
• Base-36: CJNB4

Squares and roots of 21072064

• 21072064 squared (21072064²) is 444031881220096
• 21072064 cubed (21072064³) is 9356668219110260998144
• The square root of 21072064 is 4590.4317879695
• The cube root of 21072064 is 276.2076432265

Scales and comparisons

• 21,072,064 seconds is equal to 34 weeks, 5 days, 21 hours, 21 minutes, 4 seconds.
• To count from 1 to 21,072,064 would take you about twenty hours!

  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 21072064 cubic inches would be around 23 feet tall.

Recreational maths with 21072064

• 21072064 backwards is 46027012
• The number of decimal digits it has is: 8
• The sum of 21072064's digits is 22
• More coming soon!