18712873728

Names of 18712873728

• Cardinal: 18712873728 can be written as Eighteen billion, seven hundred twelve million, eight hundred seventy-three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8712873728 × 10¹⁰

Factors of 18712873728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 243

Divisors of 18712873728

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 31 32 36 37 48 62 64 72 73 74 93 96 97 111 124 128 144 146 148 186 192 194 219 222 248 256 279 288 291 292 296 333 372 384 388 438 444 496 558 576 582 584 592 657 666 744 768 776 873 876 888 992 1116 1147 1152 1164 1168 1184 1314 1332 1488 1552 1746 1752 1776 1984 2232 2263 2294 2304 2328 2336 2368 2628 2664 2701 2976 3007 3104 3441 3492 3504 3552 3589 3968 4464 4526 4588 4656 4672 4736 5256 5328 5402 5952 6014 6208 6789 6882 6984 7008 7081 7104 7178 7936 8103 8928 9021 9052 9176 9312 9344 9472 10323 10512 10656 10767 10804 11904 12028 12416 13578 13764 13968 14016 14162 14208 14356 16206 17856 18042 18104 18352 18624 18688 20367 20646 21024 21243 21312 21534 21608 23808 24056 24309 24832 27063 27156 27528 27936 28032 28324 28416 28712 32301 32412 35712 36084 36208 36704 37248 40734 41292 42048 42486 42624 43068 43216 48112 48618 54126 54312 55056 55872 56064 56648 57424 63729 64602 64824 71424 72168 72416 73408 74496 81468 82584 83731 84096 84972 85248 86136 86432 96224 97236 108252 108624 110112 111259 111744 113296 114848 127458 129204 129648 144336 144832 146816 162936 165168 167462 168192 169944 172272 172864 192448 194472 216504 217248 219511 220224 222518 223488 226592 229696 251193 254916 258408 259296 261997 288672 289664 293632 325872 330336 333777 334924 339888 344544 345728 384896 388944 433008 434496 439022 440448 445036 453184 459392 502386 509832 516816 518592 523994 577344 579328 651744 658533 660672 667554 669848 679776 689088 691456 753579 769792 777888 785991 866016 868992 878044 880896 890072 906368 918784 1001331 1004772 1019664 1033632 1037184 1047988 1154688 1303488 1317066 1321344 1335108 1339696 1359552 1378176 1507158 1555776 1571982 1732032 1737984 1756088 1780144 1812736 1975599 2002662 2009544 2039328 2067264 2074368 2095976 2309376 2357973 2606976 2634132 2642688 2670216 2679392 2719104 2756352 3014316 3111552 3143964 3464064 3512176 3560288 3951198 4005324 4019088 4078656 4134528 4191952 4715946 5213952 5268264 5340432 5358784 5438208 6028632 6223104 6287928 6928128 7024352 7120576 7902396 8010648 8038176 8121907 8157312 8269056 8383904 9431892 10536528 10680864 10717568 12057264 12575856 14048704 14241152 15804792 16021296 16076352 16243814 16314624 16767808 18863784 21073056 21361728 21435136 24114528 24365721 25151712 28097408 28482304 31609584 32042592 32152704 32487628 33535616 37727568 42146112 42723456 48229056 48731442 50303424 56194816 63219168 64085184 64305408 64975256 67071232 73097163 75455136 84292224 85446912 96458112 97462884 100606848 126438336 128170368 129950512 146194326 150910272 168584448 192916224 194925768 201213696 252876672 256340736 259901024 292388652 301820544 389851536 505753344 519802048 584777304 603641088 779703072 1039604096 1169554608 1559406144 2079208192 2339109216 3118812288 4678218432 6237624576 9356436864 18712873728
• Sum of all divisors σ(n): 58580843776
• Sum of proper divisors (its aliquot sum) s(n): 39867970048
• 18712873728 is an abundant number, because the sum of its proper divisors (39867970048) is greater than itself. Its abundance is 21155096320

Bases of 18712873728

• Binary: 10001011011010111111100101100000000₂
• Hexadecimal: 0x45B5FCB00
• Base-36: 8LH5TS0

Squares and roots of 18712873728

• 18712873728 squared (18712873728²) is 350171643160072617984
• 18712873728 cubed (18712873728³) is 6552717741580713791644973924352
• The square root of 18712873728 is 136795.0062246425
• The cube root of 18712873728 is 2654.8918176525

Scales and comparisons

• 18,712,873,728 seconds is equal to 595 years, 4 days, 4 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,712,873,728 would take you about one thousand, one hundred ninety 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 18712873728 cubic inches would be around 221.2 feet tall.

Recreational maths with 18712873728

• 18712873728 backwards is 82737821781
• The number of decimal digits it has is: 11
• The sum of 18712873728's digits is 54
• More coming soon!