21203352720

Names of 21203352720

• Cardinal: 21203352720 can be written as Twenty-one billion, two hundred three million, three hundred fifty-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.120335272 × 10¹⁰

Factors of 21203352720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2669

Divisors of 21203352720

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 31 33 36 40 44 45 48 54 55 60 62 66 72 80 88 90 93 99 108 110 120 121 124 132 135 144 155 165 176 180 186 198 216 220 240 242 248 264 270 279 297 310 330 341 360 363 372 396 432 440 465 484 495 496 528 540 558 594 605 620 660 682 720 726 744 792 837 880 930 968 990 1023 1080 1089 1116 1188 1210 1240 1320 1364 1395 1452 1485 1488 1584 1674 1705 1815 1860 1936 1980 2046 2160 2178 2232 2376 2420 2480 2617 2640 2728 2790 2904 2970 3069 3267 3348 3410 3630 3720 3751 3960 4092 4185 4356 4464 4752 4840 5115 5234 5445 5456 5580 5808 5940 6138 6534 6696 6820 7260 7440 7502 7851 7920 8184 8370 8712 9207 9680 10230 10468 10890 11160 11253 11880 12276 13068 13085 13392 13640 14520 15004 15345 15702 16335 16368 16740 17424 18414 18755 20460 20936 21780 22320 22506 23553 23760 24552 26136 26170 27280 28787 29040 30008 30690 31404 32670 33480 33759 36828 37510 39255 40920 41872 43560 45012 46035 47106 49104 52272 52340 56265 57574 60016 61380 62808 65340 66960 67518 70659 73656 75020 78510 81127 81840 86361 87120 90024 92070 94212 101277 104680 112530 115148 117765 122760 125616 130680 135036 141318 143935 147312 150040 157020 162254 168795 172722 180048 184140 188424 202554 209360 225060 230296 235530 243381 245520 259083 261360 270072 282636 287870 300080 314040 316657 324508 337590 345444 353295 368280 376848 405108 405635 431805 450120 460592 471060 486762 506385 518166 540144 565272 575740 628080 633314 649016 675180 690888 706590 730143 736560 777249 810216 811270 863610 892397 900240 942120 949971 973524 1012770 1036332 1130544 1151480 1216905 1266628 1295415 1298032 1350360 1381776 1413180 1460286 1554498 1583285 1620432 1622540 1727220 1784794 1884240 1899942 1947048 2025540 2072664 2190429 2302960 2433810 2533256 2590830 2677191 2700720 2826360 2849913 2920572 3108996 3166570 3245080 3454440 3569588 3650715 3799884 3886245 3894096 4051080 4145328 4380858 4461985 4749855 4867620 5066512 5181660 5354382 5652720 5699826 5841144 6217992 6333140 6490160 6908880 7139176 7301430 7599768 7772490 8031573 8102160 8549739 8761716 8923970 9499710 9735240 9816367 10363320 10708764 10952145 11399652 11682288 12435984 12666280 13385955 14249565 14278352 14602860 15199536 15544980 16063146 17099478 17523432 17847940 18999420 19470480 19632734 20726640 21417528 21904290 22799304 24094719 25332560 26771910 28499130 29205720 29449101 31089960 32126292 34198956 35046864 35695880 37998840 39265468 40157865 42748695 42835056 43808580 45598608 48189438 49081835 53543820 56998260 58411440 58898202 62179920 64252584 68397912 71391760 75997680 78530936 80315730 85497390 87617160 88347303 96378876 98163670 107087640 113996520 117796404 120473595 128505168 136795824 147245505 157061872 160631460 170994780 175234320 176694606 192757752 196327340 214175280 227993040 235592808 240947190 265041909 294491010 321262920 341989560 353389212 385515504 392654680 441736515 471185616 481894380 530083818 588982020 642525840 683979120 706778424 785309360 883473030 963788760 1060167636 1177964040 1325209545 1413556848 1766946060 1927577520 2120335272 2355928080 2650419090 3533892120 4240670544 5300838180 7067784240 10601676360 21203352720
• Sum of all divisors σ(n): 82898027520
• Sum of proper divisors (its aliquot sum) s(n): 61694674800
• 21203352720 is an abundant number, because the sum of its proper divisors (61694674800) is greater than itself. Its abundance is 40491322080

Bases of 21203352720

• Binary: 10011101111110100010111110010010000₂
• Hexadecimal: 0x4EFD17C90
• Base-36: 9QNXFO0

Squares and roots of 21203352720

• 21203352720 squared (21203352720²) is 449582166568731398400
• 21203352720 cubed (21203352720³) is 9532649254378603963214043648000
• The square root of 21203352720 is 145613.7106181969
• The cube root of 21203352720 is 2767.8008985339

Scales and comparisons

• 21,203,352,720 seconds is equal to 674 years, 10 weeks, 3 days, 4 hours, 12 minutes.
• To count from 1 to 21,203,352,720 would take you about one thousand, three hundred forty-eight 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 21203352720 cubic inches would be around 230.7 feet tall.

Recreational maths with 21203352720

• 21203352720 backwards is 02725330212
• 21203352720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21203352720's digits is 27
• More coming soon!