45172890

Names of 45172890

• Cardinal: 45172890 can be written as Forty-five million, one hundred seventy-two thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 4.517289 × 10⁷

Factors of 45172890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 305

Divisors of 45172890

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 31 35 42 45 54 62 63 70 81 90 93 105 126 135 155 162 186 189 210 217 257 270 279 310 315 378 405 434 465 514 558 567 630 651 771 810 837 930 945 1085 1134 1285 1302 1395 1542 1674 1799 1890 1953 2170 2313 2511 2570 2790 2835 3255 3598 3855 3906 4185 4626 5022 5397 5670 5859 6510 6939 7710 7967 8370 8995 9765 10794 11565 11718 12555 13878 15934 16191 17577 17990 19530 20817 23130 23901 25110 26985 29295 32382 34695 35154 39835 41634 47802 48573 53970 55769 58590 69390 71703 79670 80955 87885 97146 104085 111538 119505 143406 145719 161910 167307 175770 208170 215109 239010 242865 278845 291438 334614 358515 430218 485730 501921 557690 645327 717030 728595 836535 1003842 1075545 1290654 1457190 1505763 1673070 2151090 2509605 3011526 3226635 4517289 5019210 6453270 7528815 9034578 15057630 22586445 45172890
• Sum of all divisors σ(n): 143852544
• Sum of proper divisors (its aliquot sum) s(n): 98679654
• 45172890 is an abundant number, because the sum of its proper divisors (98679654) is greater than itself. Its abundance is 53506764

Bases of 45172890

• Binary: 10101100010100100010011010₂
• Hexadecimal: 0x2B1489A
• Base-36: QW7MI

Squares and roots of 45172890

• 45172890 squared (45172890²) is 2040589990952100
• 45172890 cubed (45172890³) is 92179347196380208569000
• The square root of 45172890 is 6721.0780385293
• The cube root of 45172890 is 356.1442677917

Scales and comparisons

• 45,172,890 seconds is equal to 1 year, 22 weeks, 4 days, 20 hours, 1 minute, 30 seconds.
• To count from 1 to 45,172,890 would take you about 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 45172890 cubic inches would be around 29.7 feet tall.

Recreational maths with 45172890

• 45172890 backwards is 09827154
• The number of decimal digits it has is: 8
• The sum of 45172890's digits is 36
• More coming soon!