21231393750

Names of 21231393750

• Cardinal: 21231393750 can be written as Twenty-one billion, two hundred thirty-one million, three hundred ninety-three thousand, seven hundred fifty.

Scientific notation

• Scientific notation: 2.123139375 × 10¹⁰

Factors of 21231393750

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 7720

Divisors of 21231393750

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 25 30 35 42 45 49 50 63 70 75 90 98 105 125 126 147 150 175 210 225 245 250 294 315 350 375 441 450 490 525 625 630 735 750 875 882 1050 1125 1225 1250 1470 1575 1750 1875 2205 2250 2450 2625 3125 3150 3675 3750 4375 4410 5250 5625 6125 6250 7350 7703 7875 8750 9375 11025 11250 12250 13125 15406 15750 18375 18750 21875 22050 23109 26250 28125 30625 36750 38515 39375 43750 46218 53921 55125 56250 61250 65625 69327 77030 78750 91875 107842 110250 115545 131250 138654 153125 161763 183750 192575 196875 231090 269605 275625 306250 323526 346635 377447 385150 393750 459375 485289 539210 551250 577725 693270 754894 808815 918750 962875 970578 1132341 1155450 1348025 1378125 1617630 1733175 1887235 1925750 2264682 2426445 2696050 2756250 2888625 3397023 3466350 3774470 4044075 4814375 4852890 5661705 5777250 6740125 6794046 8088150 8665875 9436175 9628750 11323410 12132225 13480250 14443125 16985115 17331750 18872350 20220375 24071875 24264450 28308525 28886250 33700625 33970230 40440750 43329375 47180875 48143750 56617050 60661125 67401250 72215625 84925575 86658750 94361750 101101875 121322250 141542625 144431250 168503125 169851150 202203750 216646875 235904375 283085250 303305625 337006250 424627875 433293750 471808750 505509375 606611250 707713125 849255750 1011018750 1179521875 1415426250 1516528125 2123139375 2359043750 3033056250 3538565625 4246278750 7077131250 10615696875 21231393750
• Sum of all divisors σ(n): 66894124752
• Sum of proper divisors (its aliquot sum) s(n): 45662731002
• 21231393750 is an abundant number, because the sum of its proper divisors (45662731002) is greater than itself. Its abundance is 24431337252

Bases of 21231393750

• Binary: 10011110001011111010101101111010110₂
• Hexadecimal: 0x4F17D5BD6
• Base-36: 9R4MG9I

Squares and roots of 21231393750

• 21231393750 squared (21231393750²) is 450772080567539062500
• 21231393750 cubed (21231393750³) is 9570519534036145304443359375000
• The square root of 21231393750 is 145709.9644842453
• The cube root of 21231393750 is 2769.0204823847

Scales and comparisons

• 21,231,393,750 seconds is equal to 675 years, 4 weeks, 5 days, 17 hours, 22 minutes, 30 seconds.
• To count from 1 to 21,231,393,750 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 21231393750 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231393750

• 21231393750 backwards is 05739313212
• The number of decimal digits it has is: 11
• The sum of 21231393750's digits is 36
• More coming soon!