8420997728

Names of 8420997728

• Cardinal: 8420997728 can be written as Eight billion, four hundred twenty million, nine hundred ninety-seven thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 8.420997728 × 10⁹

Factors of 8420997728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 198

Divisors of 8420997728

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 8 11 13 16 22 23 26 29 31 32 44 46 52 58 62 88 89 92 104 116 124 143 176 178 184 208 232 248 253 286 299 319 341 352 356 368 377 403 416 464 496 506 572 598 638 667 682 712 713 736 754 806 899 928 979 992 1012 1144 1157 1196 1276 1334 1364 1424 1426 1508 1612 1798 1958 2024 2047 2288 2314 2392 2552 2581 2668 2728 2759 2848 2852 3016 3224 3289 3596 3916 4048 4094 4147 4433 4576 4628 4784 5104 5162 5336 5456 5518 5704 6032 6448 6578 7192 7337 7832 7843 8096 8188 8294 8671 8866 9256 9269 9568 9889 10208 10324 10672 10912 11036 11408 11687 12064 12727 12896 13156 14384 14674 15664 15686 16376 16588 17342 17732 18512 18538 19778 20648 20677 21344 22072 22517 22816 23374 25454 26312 26611 28391 28768 29348 30349 31328 31372 32752 33176 33553 34684 35464 35867 37024 37076 39556 41296 41354 44144 45034 46748 50908 52624 53222 56782 58696 59363 60698 62744 63457 65504 66352 67106 69368 70928 71734 74152 79112 80011 82592 82708 88288 90068 93496 95381 101816 101959 105248 106444 113564 117392 118726 121396 125488 126914 128557 132704 134212 138736 141856 143468 148304 158224 160022 165416 180136 186992 190762 203632 203918 212888 227128 227447 234784 237452 242792 250976 253828 257114 268424 268801 277472 286936 292721 296608 316448 320044 330832 360272 369083 373984 381524 394537 407264 407836 425776 454256 454894 474904 485584 507656 514228 536848 537602 573872 585442 640088 652993 661664 698027 720544 738166 763048 771719 789074 815672 824941 851552 880121 908512 909788 949808 971168 1015312 1028456 1040143 1073696 1075204 1147744 1170884 1280176 1305986 1396054 1476332 1526096 1543438 1578148 1631344 1649882 1760242 1819576 1840253 1899616 2030624 2056912 2080286 2150408 2341768 2560352 2611972 2792108 2952664 2956811 3052192 3086876 3156296 3262688 3299764 3520484 3639152 3680506 4113824 4160572 4300816 4683536 5223944 5584216 5905328 5913622 6173752 6312592 6599528 7040968 7278304 7361012 8321144 8488909 8601632 9074351 9367072 10447888 11168432 11441573 11810656 11827244 12347504 12625184 13199056 14081936 14722024 16642288 16977818 18148702 20242783 20895776 22336864 22883146 23654488 23923289 24695008 26398112 28163872 29444048 33284576 33955636 36297404 40485566 45766292 47308976 47846578 58888096 67911272 72594808 80971132 91532584 94617952 95693156 135822544 145189616 161942264 183065168 191386312 263156179 271645088 290379232 323884528 366130336 382772624 526312358 647769056 765545248 1052624716 2105249432 4210498864 8420997728
• Sum of all divisors σ(n): 21946982400
• Sum of proper divisors (its aliquot sum) s(n): 13525984672
• 8420997728 is an abundant number, because the sum of its proper divisors (13525984672) is greater than itself. Its abundance is 5104986944

Bases of 8420997728

• Binary: 111110101111011100011101001100000₂
• Hexadecimal: 0x1F5EE3A60
• Base-36: 3V9N7FK

Squares and roots of 8420997728

• 8420997728 squared (8420997728²) is 70913202734981161984
• 8420997728 cubed (8420997728³) is 597159919116479751190063972352
• The square root of 8420997728 is 91765.9943987967
• The cube root of 8420997728 is 2034.4851148843

Scales and comparisons

• 8,420,997,728 seconds is equal to 267 years, 39 weeks, 4 days, 6 hours, 2 minutes, 8 seconds.
• To count from 1 to 8,420,997,728 would take you about five hundred thirty-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 8420997728 cubic inches would be around 169.5 feet tall.

Recreational maths with 8420997728

• 8420997728 backwards is 8277990248
• The number of decimal digits it has is: 10
• The sum of 8420997728's digits is 56
• More coming soon!