21155528160

Names of 21155528160

• Cardinal: 21155528160 can be written as Twenty-one billion, one hundred fifty-five million, five hundred twenty-eight thousand, one hundred sixty.

Scientific notation

• Scientific notation: 2.115552816 × 10¹⁰

Factors of 21155528160

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 766

Divisors of 21155528160

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 32 36 39 40 45 48 52 54 60 65 72 78 80 81 90 96 104 108 117 120 130 135 144 156 160 162 169 180 195 208 216 234 240 260 270 288 312 324 338 351 360 390 405 416 432 468 480 507 520 540 585 624 648 676 702 720 743 780 810 845 864 936 1014 1040 1053 1080 1170 1248 1296 1352 1404 1440 1486 1521 1560 1620 1690 1755 1872 2028 2080 2106 2160 2197 2229 2340 2535 2592 2704 2808 2972 3042 3120 3240 3380 3510 3715 3744 4056 4212 4320 4394 4458 4563 4680 5070 5265 5408 5616 5944 6084 6240 6480 6591 6687 6760 7020 7430 7605 8112 8424 8788 8916 9126 9360 9659 10140 10530 10985 11145 11232 11888 12168 12960 13182 13374 13520 13689 14040 14860 15210 16224 16848 17576 17832 18252 18720 19318 19773 20061 20280 21060 21970 22290 22815 23776 24336 26364 26748 27040 27378 28080 28977 29720 30420 32955 33435 33696 35152 35664 36504 38636 39546 40122 40560 42120 43940 44580 45630 48295 48672 52728 53496 54756 56160 57954 59319 59440 60183 60840 65910 66870 68445 70304 71328 73008 77272 79092 80244 81120 84240 86931 87880 89160 91260 96590 98865 100305 105456 106992 109512 115908 118638 118880 120366 121680 125567 131820 133740 136890 144885 146016 154544 158184 160488 168480 173862 175760 177957 178320 182520 193180 197730 200610 210912 213984 219024 231816 237276 240732 243360 251134 260793 263640 267480 273780 289770 296595 300915 309088 316368 320976 347724 351520 355914 356640 365040 376701 386360 395460 401220 434655 438048 463632 474552 481464 502268 521586 527280 534960 547560 579540 593190 601830 627835 632736 641952 695448 711828 730080 753402 772720 782379 790920 802440 869310 889785 927264 949104 962928 1004536 1043172 1054560 1069920 1095120 1130103 1159080 1186380 1203660 1255670 1303965 1390896 1423656 1506804 1545440 1564758 1581840 1604880 1632371 1738620 1779570 1883505 1898208 1925856 2009072 2086344 2190240 2260206 2318160 2372760 2407320 2511340 2607930 2781792 2847312 3013608 3129516 3163680 3209760 3264742 3390309 3477240 3559140 3767010 3911895 4018144 4172688 4520412 4636320 4745520 4814640 4897113 5022680 5215860 5650515 5694624 6027216 6259032 6529484 6780618 6954480 7118280 7534020 7823790 8161855 8345376 9040824 9491040 9629280 9794226 10045360 10170927 10431720 11301030 12054432 12518064 13058968 13561236 13908960 14236560 14691339 15068040 15647580 16323710 16951545 18081648 19588452 20090720 20341854 20863440 22602060 24485565 25036128 26117936 27122472 28473120 29382678 30136080 31295160 32647420 33903090 36163296 39176904 40683708 41726880 44074017 45204120 48971130 50854635 52235872 54244944 58765356 60272160 62590320 65294840 67806180 73456695 78353808 81367416 88148034 90408240 97942260 101709270 108489888 117530712 125180640 130589680 132222051 135612360 146913390 156707616 162734832 176296068 180816480 195884520 203418540 220370085 235061424 261179360 264444102 271224720 293826780 325469664 352592136 391769040 406837080 440740170 470122848 528888204 542449440 587653560 661110255 705184272 783538080 813674160 881480340 1057776408 1175307120 1322220510 1410368544 1627348320 1762960680 2115552816 2350614240 2644441020 3525921360 4231105632 5288882040 7051842720 10577764080 21155528160
• Sum of all divisors σ(n): 80989191360
• Sum of proper divisors (its aliquot sum) s(n): 59833663200
• 21155528160 is an abundant number, because the sum of its proper divisors (59833663200) is greater than itself. Its abundance is 38678135040

Bases of 21155528160

• Binary: 10011101100111101111011110111100000₂
• Hexadecimal: 0x4ECF7BDE0
• Base-36: 9PVGE00

Squares and roots of 21155528160

• 21155528160 squared (21155528160²) is 447556371728552985600
• 21155528160 cubed (21155528160³) is 9468291425290830562912874496000
• The square root of 21155528160 is 145449.4006862867
• The cube root of 21155528160 is 2765.7183897449

Scales and comparisons

• 21,155,528,160 seconds is equal to 672 years, 35 weeks, 2 days, 15 hours, 36 minutes.
• To count from 1 to 21,155,528,160 would take you about one thousand, three hundred forty-five 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 21155528160 cubic inches would be around 230.5 feet tall.

Recreational maths with 21155528160

• 21155528160 backwards is 06182555112
• 21155528160 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21155528160's digits is 36
• More coming soon!