81420498432

Names of 81420498432

• Cardinal: 81420498432 can be written as Eighty-one billion, four hundred twenty million, four hundred ninety-eight thousand, four hundred thirty-two.

Scientific notation

• Scientific notation: 8.1420498432 × 10¹⁰

Factors of 81420498432

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1181

Divisors of 81420498432

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 32 36 39 42 48 52 54 56 59 63 64 72 78 84 91 96 104 108 112 117 118 126 128 144 156 168 177 182 189 192 208 216 224 234 236 252 256 273 288 312 336 351 354 364 378 384 413 416 432 448 468 472 504 512 531 546 576 624 672 702 708 728 756 767 768 819 826 832 864 896 936 944 1008 1062 1092 1097 1152 1239 1248 1344 1404 1416 1456 1512 1534 1536 1593 1638 1652 1664 1728 1792 1872 1888 2016 2124 2184 2194 2301 2304 2457 2478 2496 2688 2808 2832 2912 3024 3068 3186 3276 3291 3304 3328 3456 3584 3717 3744 3776 4032 4248 4368 4388 4602 4608 4914 4956 4992 5369 5376 5616 5664 5824 6048 6136 6372 6552 6582 6608 6656 6903 6912 7434 7488 7552 7679 8064 8496 8736 8776 9204 9828 9873 9912 9984 10738 10752 11151 11232 11328 11648 12096 12272 12744 13104 13164 13216 13806 13824 14261 14868 14976 15104 15358 16107 16128 16992 17472 17552 18408 19656 19746 19824 19968 20709 21476 22302 22464 22656 23037 23296 24192 24544 25488 26208 26328 26432 27612 28522 29619 29736 29952 30208 30716 32214 32256 33984 34944 35104 36816 39312 39492 39648 41418 42783 42952 44604 44928 45312 46074 46592 48321 48384 49088 50976 52416 52656 52864 55224 57044 59238 59472 59904 61432 64428 64723 67968 69111 69888 70208 73632 78624 78984 79296 82836 85566 85904 89208 89856 90624 92148 96642 96768 98176 99827 101952 104832 105312 105728 110448 114088 118476 118944 122864 128349 128856 129446 135936 138222 139776 140416 144963 147264 157248 157968 158592 165672 171132 171808 178416 179712 184296 193284 194169 196352 199654 203904 207333 209664 210624 211456 220896 228176 236952 237888 245728 256698 257712 258892 271872 276444 280832 289926 294528 299481 314496 315936 317184 331344 342264 343616 356832 368592 385047 386568 388338 392704 399308 407808 414666 419328 421248 441792 453061 456352 473904 475776 491456 513396 515424 517784 552888 561664 579852 582507 589056 598962 628992 631872 634368 662688 684528 687232 713664 737184 770094 773136 776676 798616 815616 829332 841399 842496 883584 898443 906122 912704 947808 951552 982912 1026792 1030848 1035568 1105776 1159704 1165014 1178112 1197924 1257984 1263744 1325376 1359183 1369056 1374464 1427328 1474368 1540188 1546272 1553352 1597232 1658664 1682798 1684992 1747521 1767168 1796886 1812244 1825408 1895616 1903104 1965824 2053584 2061696 2071136 2211552 2319408 2330028 2395848 2524197 2527488 2650752 2695329 2718366 2738112 2748928 2854656 2948736 3080376 3092544 3106704 3194464 3317328 3365596 3495042 3534336 3593772 3624488 3650816 3791232 3931648 4077549 4107168 4123392 4142272 4423104 4638816 4660056 4791696 5048394 5054976 5301504 5390658 5436732 5476224 5709312 5889793 5897472 6160752 6185088 6213408 6388928 6634656 6731192 6990084 7187544 7248976 7301632 7572591 7582464 8155098 8214336 8246784 8284544 8846208 9277632 9320112 9583392 10096788 10603008 10781316 10873464 10952448 11779586 11794944 12232647 12321504 12370176 12426816 12777856 13269312 13462384 13980168 14375088 14497952 15145182 15164928 16310196 16428672 16569088 17669379 17692416 18555264 18640224 19166784 20193576 21562632 21746928 21904896 22717773 23559172 24465294 24643008 24740352 24853632 25555712 26538624 26924768 27960336 28750176 28995904 30290364 32620392 32857344 33138176 35338758 35384832 37110528 37280448 38333568 40387152 43125264 43493856 45435546 47118344 48930588 49286016 49707264 51111424 53008137 53077248 53849536 55920672 57500352 57991808 60580728 65240784 65714688 70677516 74221056 74560896 76667136 80774304 86250528 86987712 90871092 94236688 97861176 98572032 99414528 106016274 106154496 107699072 111841344 115000704 115983616 121161456 130481568 141355032 149121792 153334272 159024411 161548608 172501056 173975424 181742184 188473376 195722352 197144064 212032548 215398144 223682688 230001408 231967232 242322912 260963136 282710064 298243584 318048822 323097216 345002112 347950848 363484368 376946752 391444704 424065096 430796288 447365376 460002816 484645824 521926272 565420128 636097644 646194432 690004224 695901696 726968736 753893504 782889408 848130192 894730752 969291648 1043852544 1130840256 1272195288 1292388864 1380008448 1453937472 1507787008 1565778816 1696260384 1938583296 2087705088 2261680512 2544390576 2907874944 3015574016 3131557632 3392520768 3877166592 4523361024 5088781152 5815749888 6263115264 6785041536 9046722048 10177562304 11631499776 13570083072 20355124608 27140166144 40710249216 81420498432
• Sum of all divisors σ(n): 301930675200
• Sum of proper divisors (its aliquot sum) s(n): 220510176768
• 81420498432 is an abundant number, because the sum of its proper divisors (220510176768) is greater than itself. Its abundance is 139089678336

Bases of 81420498432

• Binary: 1001011110101000010100011011000000000₂
• Hexadecimal: 0x12F50A3600
• Base-36: 11EJNUO0

Squares and roots of 81420498432

• 81420498432 squared (81420498432²) is 6629297564915314458624
• 81420498432 cubed (81420498432³) is 539760711989448779091182320877568
• The square root of 81420498432 is 285342.7735759221
• The cube root of 81420498432 is 4334.2229979141

Scales and comparisons

• 81,420,498,432 seconds is equal to 2,588 years, 47 weeks, 5 days, 21 hours, 7 minutes, 12 seconds.
• To count from 1 to 81,420,498,432 would take you about five thousand, one hundred seventy-seven 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 81420498432 cubic inches would be around 361.2 feet tall.

Recreational maths with 81420498432

• 81420498432 backwards is 23489402418
• The number of decimal digits it has is: 11
• The sum of 81420498432's digits is 45
• More coming soon!