155420161728

Names of 155420161728

• Cardinal: 155420161728 can be written as One hundred fifty-five billion, four hundred twenty million, one hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.55420161728 × 10¹¹

Factors of 155420161728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1750

Divisors of 155420161728

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 19 23 24 26 32 38 39 46 48 52 57 64 69 76 78 89 92 96 104 114 138 152 156 178 184 192 208 228 247 267 276 299 304 312 356 368 416 437 456 494 534 552 598 608 624 712 736 741 832 874 897 912 988 1068 1104 1157 1196 1216 1248 1311 1424 1472 1482 1601 1691 1748 1794 1824 1976 2047 2136 2208 2314 2392 2496 2622 2848 2964 3202 3382 3471 3496 3588 3648 3952 4094 4272 4416 4628 4784 4803 5073 5244 5681 5696 5928 6141 6404 6764 6942 6992 7176 7904 8188 8544 9256 9568 9606 10146 10488 11362 11856 12282 12808 13528 13884 13984 14352 15808 16376 17043 17088 18512 19136 19212 20292 20813 20976 21983 22724 23712 24564 25616 26611 27056 27768 27968 28704 30419 32752 34086 36823 37024 38424 38893 40584 41626 41952 43966 45448 47424 49128 51232 53222 54112 55536 57408 60838 62439 65504 65949 68172 73646 74048 76848 77786 79833 81168 83252 83904 87932 90896 91257 98256 102464 106444 108224 110469 111072 116679 121676 124878 131008 131898 136344 142489 147292 153696 155572 159666 162336 166504 175864 181792 182514 196512 212888 220938 222144 233358 243352 249756 263796 272688 284978 294584 307392 311144 319332 324672 333008 351728 363584 365028 393024 395447 425776 427467 441876 466716 478699 486704 499512 505609 527592 545376 569956 589168 622288 638664 666016 699637 703456 730056 790894 851552 854934 883752 933432 957398 973408 999024 1011218 1055184 1090752 1139912 1178336 1186341 1244576 1277328 1332032 1399274 1406912 1436097 1460112 1516827 1581788 1703104 1709868 1767504 1852357 1866864 1914796 1946816 1998048 2022436 2098911 2110368 2279824 2356672 2372682 2489152 2554656 2707291 2798548 2872194 2920224 3033654 3163576 3277247 3419736 3535008 3704714 3733728 3829592 3996096 4044872 4197822 4220736 4559648 4745364 5109312 5414582 5557071 5597096 5744388 5840448 6067308 6327152 6554494 6839472 7070016 7409428 7467456 7659184 8089744 8121873 8395644 9095281 9119296 9490728 9831741 10829164 11114142 11194192 11488776 12134616 12654304 13108988 13678944 14818856 15318368 16179488 16243746 16791288 18190562 18981456 19663482 21658328 22228284 22388384 22977552 24269232 25308608 26217976 27285843 27357888 29637712 30636736 32358976 32487492 33582576 35194783 36381124 37962912 39326964 42604211 43316656 44456568 44776768 45955104 48538464 52435952 54571686 59275424 62267693 64974984 67165152 70389566 72762248 75925824 78653928 85208422 86633312 88913136 91910208 97076928 104871904 105584349 109143372 118550848 124535386 127812633 129949968 134330304 140779132 145524496 157307856 170416844 173266624 177826272 186803079 209743808 211168698 218286744 249070772 255625266 259899936 281558264 291048992 314615712 340833688 355652544 373606158 422337396 436573488 498141544 511250532 519799872 563116528 582097984 629231424 681667376 747212316 809480009 844674792 873146976 996283088 1022501064 1126233056 1363334752 1494424632 1618960018 1689349584 1746293952 1992566176 2045002128 2252466112 2428440027 2726669504 2988849264 3237920036 3378699168 3985132352 4090004256 4856880054 5977698528 6475840072 6757398336 8180008512 9713760108 11955397056 12951680144 19427520216 25903360288 38855040432 51806720576 77710080864 155420161728
• Sum of all divisors σ(n): 492195916800
• Sum of proper divisors (its aliquot sum) s(n): 336775755072
• 155420161728 is an abundant number, because the sum of its proper divisors (336775755072) is greater than itself. Its abundance is 181355593344

Bases of 155420161728

• Binary: 10010000101111110000110111011011000000₂
• Hexadecimal: 0x242FC376C0
• Base-36: 1ZED5GAO

Squares and roots of 155420161728

• 155420161728 squared (155420161728²) is 24155426671557675945984
• 155420161728 cubed (155420161728³) is 3754240319902338733204648672100352
• The square root of 155420161728 is 394233.6385038699
• The cube root of 155420161728 is 5376.5346889709

Scales and comparisons

• 155,420,161,728 seconds is equal to 4,941 years, 45 weeks, 5 days, 11 hours, 8 minutes, 48 seconds.
• To count from 1 to 155,420,161,728 would take you about nine thousand, eight hundred eighty-three 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 155420161728 cubic inches would be around 448 feet tall.

Recreational maths with 155420161728

• 155420161728 backwards is 827161024551
• The number of decimal digits it has is: 12
• The sum of 155420161728's digits is 42
• More coming soon!