21130956

Names of 21130956

• Cardinal: 21130956 can be written as Twenty-one million, one hundred thirty thousand, nine hundred fifty-six.

Scientific notation

• Scientific notation: 2.1130956 × 10⁷

Factors of 21130956

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 23

Divisors of 21130956

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 33 36 42 44 49 54 63 66 77 81 84 98 99 108 121 126 132 147 154 162 189 196 198 231 242 252 294 297 308 324 363 378 396 441 462 484 539 567 588 594 693 726 756 847 882 891 924 1078 1089 1134 1188 1323 1331 1386 1452 1617 1694 1764 1782 2079 2156 2178 2268 2541 2646 2662 2772 3234 3267 3388 3564 3969 3993 4158 4356 4851 5082 5292 5324 5929 6237 6468 6534 7623 7938 7986 8316 9317 9702 9801 10164 11858 11979 12474 13068 14553 15246 15876 15972 17787 18634 19404 19602 22869 23716 23958 24948 27951 29106 30492 35574 35937 37268 39204 43659 45738 47916 53361 55902 58212 65219 68607 71148 71874 83853 87318 91476 106722 107811 111804 130438 137214 143748 160083 167706 174636 195657 213444 215622 251559 260876 274428 320166 335412 391314 431244 480249 503118 586971 640332 754677 782628 960498 1006236 1173942 1509354 1760913 1920996 2347884 3018708 3521826 5282739 7043652 10565478 21130956
• Sum of all divisors σ(n): 70680456
• Sum of proper divisors (its aliquot sum) s(n): 49549500
• 21130956 is an abundant number, because the sum of its proper divisors (49549500) is greater than itself. Its abundance is 28418544

Bases of 21130956

• Binary: 1010000100110111011001100₂
• Hexadecimal: 0x1426ECC
• Base-36: CKWR0

Squares and roots of 21130956

• 21130956 squared (21130956²) is 446517301473936
• 21130956 cubed (21130956³) is 9435337450684476762816
• The square root of 21130956 is 4596.8419594325
• The cube root of 21130956 is 276.4647180319

Scales and comparisons

• 21,130,956 seconds is equal to 34 weeks, 6 days, 13 hours, 42 minutes, 36 seconds.
• To count from 1 to 21,130,956 would take you about two days!

  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 21130956 cubic inches would be around 23 feet tall.

Recreational maths with 21130956

• 21130956 backwards is 65903112
• 21130956 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21130956's digits is 27
• More coming soon!