21241439648

Names of 21241439648

• Cardinal: 21241439648 can be written as Twenty-one billion, two hundred forty-one million, four hundred thirty-nine thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 2.1241439648 × 10¹⁰

Factors of 21241439648

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 253

Divisors of 21241439648

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 32 44 52 88 104 121 143 169 176 208 227 242 286 338 352 416 454 484 572 676 908 968 1144 1331 1352 1573 1816 1859 1936 2197 2288 2497 2662 2704 2951 3146 3632 3718 3872 4394 4576 4994 5324 5408 5902 6292 7264 7436 8788 9988 10648 11804 12584 14872 17303 17576 19976 20449 21296 23608 24167 25168 27467 29744 32461 34606 35152 38363 39952 40898 42592 47216 48334 50336 54934 59488 64922 69212 70304 76726 79904 81796 94432 96668 109868 129844 138424 153452 163592 193336 219736 224939 259688 265837 276848 302137 306904 327184 357071 386672 421993 439472 449878 498719 519376 531674 553696 604274 613808 654368 714142 773344 843986 878944 899756 997438 1038752 1063348 1208548 1227616 1428284 1687972 1799512 1994876 2126696 2417096 2856568 2924207 3375944 3599024 3927781 3989752 4253392 4641923 4834192 5485909 5713136 5848414 6751888 7198048 7855562 7979504 8506784 9283846 9668384 10971818 11426272 11696828 13503776 15711124 15959008 18567692 21943636 23393656 31422248 37135384 43887272 46787312 51061153 60344999 62844496 74270768 87774544 93574624 102122306 120689998 125688992 148541536 175549088 204244612 241379996 408489224 482759992 663794989 816978448 965519984 1327589978 1633956896 1931039968 2655179956 5310359912 10620719824 21241439648
• Sum of all divisors σ(n): 50048772480
• Sum of proper divisors (its aliquot sum) s(n): 28807332832
• 21241439648 is an abundant number, because the sum of its proper divisors (28807332832) is greater than itself. Its abundance is 7565893184

Bases of 21241439648

• Binary: 10011110010000101101010010110100000₂
• Hexadecimal: 0x4F216A5A0
• Base-36: 9RALRQ8

Squares and roots of 21241439648

• 21241439648 squared (21241439648²) is 451198758319626363904
• 21241439648 cubed (21241439648³) is 9584111194098881302776501665792
• The square root of 21241439648 is 145744.4326483863
• The cube root of 21241439648 is 2769.4571456807

Scales and comparisons

• 21,241,439,648 seconds is equal to 675 years, 21 weeks, 2 days, 23 hours, 54 minutes, 8 seconds.
• To count from 1 to 21,241,439,648 would take you about one thousand, three hundred fifty 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 21241439648 cubic inches would be around 230.8 feet tall.

Recreational maths with 21241439648

• 21241439648 backwards is 84693414212
• 21241439648 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21241439648's digits is 44
• More coming soon!