21493350720

Names of 21493350720

• Cardinal: 21493350720 can be written as Twenty-one billion, four hundred ninety-three million, three hundred fifty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.149335072 × 10¹⁰

Factors of 21493350720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 126560

Divisors of 21493350720

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 59 60 64 72 80 90 96 118 120 144 160 177 180 192 236 240 288 295 320 354 360 472 480 531 576 590 708 720 885 944 960 1062 1180 1416 1440 1770 1888 2124 2360 2655 2832 2880 3540 3776 4248 4720 5310 5664 7080 8496 9440 10620 11328 14160 16992 18880 21240 28320 33984 42480 56640 84960 126491 169920 252982 379473 505964 632455 758946 1011928 1138419 1264910 1517892 1897365 2023856 2276838 2529820 3035784 3794730 4047712 4553676 5059640 5692095 6071568 7462969 7589460 8095424 9107352 10119280 11384190 12143136 14925938 15178920 18214704 20238560 22388907 22768380 24286272 29851876 30357840 36429408 37314845 40477120 44777814 45536760 59703752 60715680 67166721 72858816 74629690 89555628 91073520 111944535 119407504 121431360 134333442 149259380 179111256 182147040 223889070 238815008 268666884 298518760 335833605 358222512 364294080 447778140 477630016 537333768 597037520 671667210 716445024 895556280 1074667536 1194075040 1343334420 1432890048 1791112560 2149335072 2388150080 2686668840 3582225120 4298670144 5373337680 7164450240 10746675360 21493350720
• Sum of all divisors σ(n): 75181785120
• Sum of proper divisors (its aliquot sum) s(n): 53688434400
• 21493350720 is an abundant number, because the sum of its proper divisors (53688434400) is greater than itself. Its abundance is 32195083680

Bases of 21493350720

• Binary: 10100000001000110101000000101000000₂
• Hexadecimal: 0x5011A8140
• Base-36: 9VGL3K0

Squares and roots of 21493350720

• 21493350720 squared (21493350720²) is 461964125172924518400
• 21493350720 cubed (21493350720³) is 9929156962399647322058293248000
• The square root of 21493350720 is 146606.1073761935
• The cube root of 21493350720 is 2780.3621976887

Scales and comparisons

• 21,493,350,720 seconds is equal to 683 years, 21 weeks, 6 days, 15 hours, 12 minutes.
• To count from 1 to 21,493,350,720 would take you about one thousand, three hundred sixty-six 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 21493350720 cubic inches would be around 231.7 feet tall.

Recreational maths with 21493350720

• 21493350720 backwards is 02705339412
• 21493350720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21493350720's digits is 36
• More coming soon!