18439708672

Names of 18439708672

• Cardinal: 18439708672 can be written as Eighteen billion, four hundred thirty-nine million, seven hundred eight thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 1.8439708672 × 10¹⁰

Factors of 18439708672

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 115

Divisors of 18439708672

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 23 28 31 32 41 44 46 56 62 64 77 82 88 92 112 124 128 154 161 164 176 184 217 224 248 253 256 287 308 322 328 341 352 368 434 448 451 496 506 512 574 616 644 656 682 704 713 736 868 896 902 943 992 1012 1024 1148 1232 1271 1288 1312 1364 1408 1426 1472 1736 1771 1792 1804 1886 1984 2024 2048 2296 2387 2464 2542 2576 2624 2728 2816 2852 2944 3157 3472 3542 3584 3608 3772 3968 4048 4096 4592 4774 4928 4991 5084 5152 5248 5456 5632 5704 5888 6314 6601 6944 7084 7168 7216 7544 7843 7936 8096 8192 8897 9184 9548 9856 9982 10168 10304 10373 10496 10912 11264 11408 11776 12628 13202 13888 13981 14168 14336 14432 15088 15686 15872 16192 17794 18368 19096 19712 19964 20336 20608 20746 20992 21824 22528 22816 23552 25256 26404 27776 27962 28336 28672 28864 29233 30176 31372 31744 32384 35588 36736 38192 39424 39928 40672 41216 41492 41984 43648 45056 45632 47104 50512 52808 54901 55552 55924 56672 57344 57728 58466 60352 62744 63488 64768 71176 72611 73472 76384 78848 79856 81344 82432 82984 83968 87296 90112 91264 94208 97867 101024 105616 109802 111104 111848 113344 115456 116932 120704 125488 126976 129536 142352 145222 146944 152768 157696 159712 162688 164864 165968 167936 174592 182528 188416 195734 202048 204631 211232 219604 222208 223696 226688 230912 233864 241408 250976 253952 259072 284704 290444 293888 305536 315392 319424 321563 325376 329728 331936 335872 349184 365056 391468 404096 409262 422464 439208 444416 447392 453376 461824 467728 482816 501952 518144 569408 580888 587776 611072 630784 638848 643126 650752 659456 663872 698368 730112 782936 808192 818524 844928 878416 888832 894784 906752 923648 935456 965632 1003904 1036288 1138816 1161776 1175552 1222144 1277696 1286252 1301504 1318912 1327744 1396736 1460224 1565872 1616384 1637048 1689856 1756832 1777664 1789568 1813504 1847296 1870912 1931264 2007808 2072576 2250941 2277632 2323552 2351104 2444288 2555392 2572504 2603008 2655488 2793472 2920448 3131744 3232768 3274096 3379712 3513664 3579136 3627008 3694592 3741824 3862528 4015616 4501882 4555264 4647104 4888576 5110784 5145008 5206016 5310976 5840896 6263488 6465536 6548192 6759424 7027328 7158272 7254016 7483648 7725056 8031232 9003764 9110528 9294208 9777152 10221568 10290016 10412032 10621952 12526976 12931072 13096384 13518848 14054656 14316544 14508032 14967296 16062464 18007528 18221056 18588416 19554304 20443136 20580032 21243904 25053952 25862144 26192768 27037696 28109312 28633088 29934592 32124928 36015056 36442112 37176832 40886272 41160064 42487808 50107904 52385536 54075392 56218624 57266176 59869184 64249856 72030112 72884224 74353664 82320128 84975616 100215808 104771072 112437248 114532352 119738368 144060224 148707328 164640256 200431616 209542144 224874496 239476736 288120448 297414656 329280512 400863232 419084288 449748992 576240896 594829312 658561024 801726464 838168576 1152481792 1317122048 1676337152 2304963584 2634244096 4609927168 9219854336 18439708672
• Sum of all divisors σ(n): 50731204608
• Sum of proper divisors (its aliquot sum) s(n): 32291495936
• 18439708672 is an abundant number, because the sum of its proper divisors (32291495936) is greater than itself. Its abundance is 13851787264

Bases of 18439708672

• Binary: 10001001011000101111010000000000000₂
• Hexadecimal: 0x44B17A000
• Base-36: 8GYIY9S

Squares and roots of 18439708672

• 18439708672 squared (18439708672²) is 340022855908232003584
• 18439708672 cubed (18439708672³) is 6269922404769232112675819880448
• The square root of 18439708672 is 135792.8888859795
• The cube root of 18439708672 is 2641.9099982847

Scales and comparisons

• 18,439,708,672 seconds is equal to 586 years, 16 weeks, 6 days, 13 hours, 17 minutes, 52 seconds.
• To count from 1 to 18,439,708,672 would take you about one thousand, one hundred seventy-two 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 18439708672 cubic inches would be around 220.2 feet tall.

Recreational maths with 18439708672

• 18439708672 backwards is 27680793481
• The number of decimal digits it has is: 11
• The sum of 18439708672's digits is 55
• More coming soon!