21372157440

Names of 21372157440

• Cardinal: 21372157440 can be written as Twenty-one billion, three hundred seventy-two million, one hundred fifty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.137215744 × 10¹⁰

Factors of 21372157440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 311

Divisors of 21372157440

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 73 80 90 96 97 120 128 131 144 146 160 180 192 194 219 240 256 262 288 291 292 320 360 365 384 388 393 438 480 485 512 524 576 582 584 640 655 657 720 730 768 776 786 873 876 960 970 1048 1095 1152 1164 1168 1179 1280 1310 1314 1440 1455 1460 1536 1552 1572 1746 1752 1920 1940 1965 2096 2190 2304 2328 2336 2358 2560 2620 2628 2880 2910 2920 3104 3144 3285 3492 3504 3840 3880 3930 4192 4365 4380 4608 4656 4672 4716 5240 5256 5760 5820 5840 5895 6208 6288 6570 6984 7008 7081 7680 7760 7860 8384 8730 8760 9312 9344 9432 9563 10480 10512 11520 11640 11680 11790 12416 12576 12707 13140 13968 14016 14162 15520 15720 16768 17460 17520 18624 18688 18864 19126 20960 21024 21243 23040 23280 23360 23580 24832 25152 25414 26280 27936 28032 28324 28689 31040 31440 33536 34920 35040 35405 37248 37376 37728 38121 38252 41920 42048 42486 46560 46720 47160 47815 49664 50304 50828 52560 55872 56064 56648 57378 62080 62880 63535 63729 67072 69840 70080 70810 74496 75456 76242 76504 83840 84096 84972 86067 93120 93440 94320 95630 100608 101656 105120 106215 111744 112128 113296 114363 114756 124160 125760 127070 127458 139680 140160 141620 143445 148992 150912 152484 153008 167680 168192 169944 172134 186240 186880 188640 190605 191260 201216 203312 210240 212430 223488 226592 228726 229512 248320 251520 254140 254916 279360 280320 283240 286890 301824 304968 306016 318645 335360 336384 339888 344268 372480 377280 381210 382520 406624 420480 424860 430335 446976 453184 457452 459024 503040 508280 509832 558720 560640 566480 571815 573780 603648 609936 612032 637290 679776 688536 744960 754560 762420 765040 813248 840960 849720 860670 906368 914904 918048 927611 1006080 1016560 1019664 1117440 1132960 1143630 1147560 1219872 1224064 1274580 1359552 1377072 1509120 1524840 1530080 1626496 1681920 1699440 1721340 1812736 1829808 1836096 1855222 2033120 2039328 2234880 2265920 2287260 2295120 2439744 2448128 2549160 2719104 2754144 2782833 3018240 3049680 3060160 3252992 3398880 3442680 3625472 3659616 3672192 3710444 4066240 4078656 4531840 4574520 4590240 4638055 4879488 4896256 5098320 5438208 5508288 5565666 6099360 6120320 6505984 6797760 6885360 7319232 7344384 7420888 8132480 8157312 8348499 9063680 9149040 9180480 9276110 9758976 10196640 10876416 11016576 11131332 12198720 12240640 13595520 13770720 13914165 14638464 14688768 14841776 16264960 16314624 16696998 18127360 18298080 18360960 18552220 19517952 20393280 22033152 22262664 24397440 24481280 27191040 27541440 27828330 29276928 29683552 32529920 32629248 33393996 36596160 36721920 37104440 40786560 41742495 44066304 44525328 48794880 54382080 55082880 55656660 58553856 59367104 66787992 73192320 73443840 74208880 81573120 83484990 89050656 97589760 110165760 111313320 118734208 133575984 146384640 148417760 163146240 166969980 178101312 220331520 222626640 237468416 267151968 292769280 296835520 333939960 356202624 445253280 474936832 534303936 593671040 667879920 712405248 890506560 1068607872 1187342080 1335759840 1424810496 1781013120 2137215744 2374684160 2671519680 3562026240 4274431488 5343039360 7124052480 10686078720 21372157440
• Sum of all divisors σ(n): 76383923616
• Sum of proper divisors (its aliquot sum) s(n): 55011766176
• 21372157440 is an abundant number, because the sum of its proper divisors (55011766176) is greater than itself. Its abundance is 33639608736

Bases of 21372157440

• Binary: 10011111001111000010011111000000000₂
• Hexadecimal: 0x4F9E13E00
• Base-36: 9TGFI80

Squares and roots of 21372157440

• 21372157440 squared (21372157440²) is 456769113640147353600
• 21372157440 cubed (21372157440³) is 9762141410446480745938550784000
• The square root of 21372157440 is 146192.1934988323
• The cube root of 21372157440 is 2775.1265235713

Scales and comparisons

• 21,372,157,440 seconds is equal to 679 years, 29 weeks, 3 days, 22 hours, 24 minutes.
• To count from 1 to 21,372,157,440 would take you about one thousand, three hundred fifty-nine 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 21372157440 cubic inches would be around 231.3 feet tall.

Recreational maths with 21372157440

• 21372157440 backwards is 04475127312
• 21372157440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21372157440's digits is 36
• More coming soon!