21235472440

Names of 21235472440

• Cardinal: 21235472440 can be written as Twenty-one billion, two hundred thirty-five million, four hundred seventy-two thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.123547244 × 10¹⁰

Factors of 21235472440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 978

Divisors of 21235472440

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 20 26 28 31 35 40 52 56 62 65 70 91 104 124 130 140 155 182 217 248 260 280 307 310 364 403 434 455 520 613 614 620 728 806 868 910 1085 1226 1228 1240 1535 1612 1736 1820 2015 2149 2170 2452 2456 2821 3065 3070 3224 3640 3991 4030 4291 4298 4340 4904 5642 6130 6140 7969 7982 8060 8582 8596 8680 9517 10745 11284 12260 12280 14105 15938 15964 16120 17164 17192 19003 19034 19955 21455 21490 22568 24520 27937 28210 31876 31928 34328 38006 38068 39845 39910 42910 42980 47585 55783 55874 56420 63752 66619 76012 76136 79690 79820 85820 85960 95015 95170 111566 111748 112840 123721 133021 133238 139685 152024 159380 159640 171640 188191 190030 190340 223132 223496 247039 247442 266042 266476 278915 279370 318760 333095 376382 380060 380680 446264 494078 494884 532084 532952 557830 558740 618605 665105 666190 752764 760120 866047 940955 988156 989768 1064168 1115660 1117480 1235195 1237210 1317337 1330210 1332380 1505528 1729273 1732094 1881910 1976312 2231320 2446483 2470390 2474420 2634674 2660420 2664760 3458546 3464188 3763820 4330235 4892966 4940780 4948840 5269348 5320840 5833921 6586685 6917092 6928376 7527640 8646365 8660470 9785932 9881560 10538696 11667842 12232415 13173370 13834184 17125381 17292730 17320940 19571864 23335684 24464830 26346740 29169605 34250762 34585460 34641880 40837447 46671368 48929660 52693480 58339210 68501524 69170920 75840973 81674894 85626905 97859320 116678420 137003048 151681946 163349788 171253810 204187235 233356840 303363892 326699576 342507620 379204865 408374470 530886811 606727784 685015240 758409730 816748940 1061773622 1516819460 1633497880 2123547244 2654434055 3033638920 4247094488 5308868110 10617736220 21235472440
• Sum of all divisors σ(n): 60999966720
• Sum of proper divisors (its aliquot sum) s(n): 39764494280
• 21235472440 is an abundant number, because the sum of its proper divisors (39764494280) is greater than itself. Its abundance is 18529021840

Bases of 21235472440

• Binary: 10011110001101110111001100000111000₂
• Hexadecimal: 0x4F1BB9838
• Base-36: 9R71VEG

Squares and roots of 21235472440

• 21235472440 squared (21235472440²) is 450945289749999553600
• 21235472440 cubed (21235472440³) is 9576036272433930010485102784000
• The square root of 21235472440 is 145723.9597320907
• The cube root of 21235472440 is 2769.1977866973

Scales and comparisons

• 21,235,472,440 seconds is equal to 675 years, 11 weeks, 3 days, 22 hours, 20 minutes, 40 seconds.
• To count from 1 to 21,235,472,440 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 21235472440 cubic inches would be around 230.8 feet tall.

Recreational maths with 21235472440

• 21235472440 backwards is 04427453212
• The number of decimal digits it has is: 11
• The sum of 21235472440's digits is 34
• More coming soon!