21172424640

Names of 21172424640

• Cardinal: 21172424640 can be written as Twenty-one billion, one hundred seventy-two million, four hundred twenty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.117242464 × 10¹⁰

Factors of 21172424640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 15225

Divisors of 21172424640

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 47 48 60 62 64 80 93 94 96 120 124 141 155 160 186 188 192 235 240 248 282 310 320 372 376 465 470 480 496 564 620 705 744 752 930 940 960 992 1128 1240 1410 1457 1488 1504 1860 1880 1984 2256 2480 2820 2914 2976 3008 3720 3760 4371 4512 4960 5640 5828 5952 7285 7440 7520 8742 9024 9920 11280 11656 14570 14880 15040 15137 17484 21855 22560 23312 29140 29760 30274 34968 43710 45120 45411 46624 58280 60548 69936 75685 87420 90822 93248 116560 121096 139872 151370 174840 181644 227055 233120 242192 279744 302740 349680 363288 454110 466240 469247 484384 605480 699360 711439 726576 908220 938494 968768 1210960 1398720 1407741 1422878 1453152 1816440 1876988 2134317 2346235 2421920 2815482 2845756 2906304 3557195 3632880 3753976 4268634 4692470 4843840 5630964 5691512 7038705 7114390 7265760 7507952 8537268 9384940 10671585 11261928 11383024 14077410 14228780 14531520 15015904 17074536 18769880 21343170 22054609 22523856 22766048 28154820 28457560 30031808 34149072 37539760 42686340 44109218 45047712 45532096 56309640 56915120 66163827 68298144 75079520 85372680 88218436 90095424 110273045 112619280 113830240 132327654 136596288 150159040 170745360 176436872 220546090 225238560 227660480 264655308 330819135 341490720 352873744 441092180 450477120 529310616 661638270 682981440 705747488 882184360 1058621232 1323276540 1411494976 1764368720 2117242464 2646553080 3528737440 4234484928 5293106160 7057474880 10586212320 21172424640
• Sum of all divisors σ(n): 70871998464
• Sum of proper divisors (its aliquot sum) s(n): 49699573824
• 21172424640 is an abundant number, because the sum of its proper divisors (49699573824) is greater than itself. Its abundance is 28527149184

Bases of 21172424640

• Binary: 10011101101111110011000111111000000₂
• Hexadecimal: 0x4EDF98FC0
• Base-36: 9Q5IJEO

Squares and roots of 21172424640

• 21172424640 squared (21172424640²) is 448271565136479129600
• 21172424640 cubed (21172424640³) is 9490995931106955686388793344000
• The square root of 21172424640 is 145507.4727977913
• The cube root of 21172424640 is 2766.4545010445

Scales and comparisons

• 21,172,424,640 seconds is equal to 673 years, 11 weeks, 2 days, 5 hours, 4 minutes.
• To count from 1 to 21,172,424,640 would take you about one thousand, three hundred forty-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 21172424640 cubic inches would be around 230.5 feet tall.

Recreational maths with 21172424640

• 21172424640 backwards is 04642427112
• The number of decimal digits it has is: 11
• The sum of 21172424640's digits is 33
• More coming soon!