149905728

Names of 149905728

• Cardinal: 149905728 can be written as One hundred forty-nine million, nine hundred five thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.49905728 × 10⁸

Factors of 149905728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 29

Divisors of 149905728

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 27 28 32 34 36 42 48 51 54 56 63 64 68 72 81 84 96 102 108 112 119 126 136 144 153 162 168 189 192 204 216 224 238 243 252 272 288 306 324 336 357 378 408 432 448 459 476 486 504 544 567 576 612 648 672 714 729 756 816 864 918 952 972 1008 1071 1088 1134 1224 1296 1344 1377 1428 1458 1512 1632 1701 1728 1836 1904 1944 2016 2142 2187 2268 2448 2592 2754 2856 2916 3024 3213 3264 3402 3672 3808 3888 4032 4131 4284 4374 4536 4896 5103 5184 5508 5712 5832 6048 6426 6561 6804 7344 7616 7776 8262 8568 8748 9072 9639 9792 10206 11016 11424 11664 12096 12393 12852 13122 13608 14688 15309 15552 16524 17136 17496 18144 19278 19683 20412 22032 22848 23328 24786 25704 26244 27216 28917 29376 30618 33048 34272 34992 36288 37179 38556 39366 40824 44064 45927 46656 49572 51408 52488 54432 57834 61236 66096 68544 69984 74358 77112 78732 81648 86751 88128 91854 99144 102816 104976 108864 111537 115668 122472 132192 137781 139968 148716 154224 157464 163296 173502 183708 198288 205632 209952 223074 231336 244944 260253 264384 275562 297432 308448 314928 326592 334611 347004 367416 396576 419904 446148 462672 489888 520506 551124 594864 616896 629856 669222 694008 734832 780759 793152 892296 925344 979776 1041012 1102248 1189728 1259712 1338444 1388016 1469664 1561518 1784592 1850688 2082024 2204496 2342277 2379456 2676888 2776032 2939328 3123036 3569184 4164048 4408992 4684554 5353776 5552064 6246072 7138368 8328096 8817984 9369108 10707552 12492144 16656192 18738216 21415104 24984288 37476432 49968576 74952864 149905728
• Sum of all divisors σ(n): 539934912
• Sum of proper divisors (its aliquot sum) s(n): 390029184
• 149905728 is an abundant number, because the sum of its proper divisors (390029184) is greater than itself. Its abundance is 240123456

Bases of 149905728

• Binary: 1000111011110110000101000000₂
• Hexadecimal: 0x8EF6140
• Base-36: 2H9000

Squares and roots of 149905728

• 149905728 squared (149905728²) is 22471727287209984
• 149905728 cubed (149905728³) is 3368640638406677740388352
• The square root of 149905728 is 12243.5994707439
• The cube root of 149905728 is 531.2179513215

Scales and comparisons

• 149,905,728 seconds is equal to 4 years, 39 weeks, 6 days, 28 minutes, 48 seconds.
• To count from 1 to 149,905,728 would take you about 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 149905728 cubic inches would be around 44.3 feet tall.

Recreational maths with 149905728

• 149905728 backwards is 827509941
• The number of decimal digits it has is: 9
• The sum of 149905728's digits is 45
• More coming soon!