21232746920

Names of 21232746920

• Cardinal: 21232746920 can be written as Twenty-one billion, two hundred thirty-two million, seven hundred forty-six thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.123274692 × 10¹⁰

Factors of 21232746920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 222435

Divisors of 21232746920

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 28 31 35 40 44 55 56 62 70 77 88 110 124 140 154 155 217 220 248 280 308 310 341 385 434 440 616 620 682 770 868 1085 1240 1364 1540 1705 1736 2170 2387 2728 3080 3410 4340 4774 6820 8680 9548 11935 13640 19096 23870 47740 95480 222379 444758 889516 1111895 1556653 1779032 2223790 2446169 3113306 4447580 4892338 6226612 6893749 7783265 8895160 9784676 12230845 12453224 13787498 15566530 17123183 19569352 24461690 27574996 31133060 34246366 34468745 48256243 48923380 55149992 62266120 68492732 68937490 75831239 85615915 96512486 97846760 136985464 137874980 151662478 171231830 193024972 241281215 275749960 303324956 342463660 379156195 386049944 482562430 530818673 606649912 684927320 758312390 965124860 1061637346 1516624780 1930249720 2123274692 2654093365 3033249560 4246549384 5308186730 10616373460 21232746920
• Sum of all divisors σ(n): 61483622400
• Sum of proper divisors (its aliquot sum) s(n): 40250875480
• 21232746920 is an abundant number, because the sum of its proper divisors (40250875480) is greater than itself. Its abundance is 19018128560

Bases of 21232746920

• Binary: 10011110001100100100000000110101000₂
• Hexadecimal: 0x4F19201A8
• Base-36: 9R5FGDK

Squares and roots of 21232746920

• 21232746920 squared (21232746920²) is 450829541768769486400
• 21232746920 cubed (21232746920³) is 9572349564435851664549581888000
• The square root of 21232746920 is 145714.6077783557
• The cube root of 21232746920 is 2769.0793084153

Scales and comparisons

• 21,232,746,920 seconds is equal to 675 years, 7 weeks, 9 hours, 15 minutes, 20 seconds.
• To count from 1 to 21,232,746,920 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 21232746920 cubic inches would be around 230.8 feet tall.

Recreational maths with 21232746920

• 21232746920 backwards is 02964723212
• The number of decimal digits it has is: 11
• The sum of 21232746920's digits is 38
• More coming soon!