28497920

Names of 28497920

• Cardinal: 28497920 can be written as Twenty-eight million, four hundred ninety-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.849792 × 10⁷

Factors of 28497920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 41

Divisors of 28497920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 23 32 40 44 46 55 64 80 88 92 110 115 121 128 160 176 184 220 230 242 253 256 320 352 368 440 460 484 506 512 605 640 704 736 880 920 968 1012 1024 1210 1265 1280 1408 1472 1760 1840 1936 2024 2048 2420 2530 2560 2783 2816 2944 3520 3680 3872 4048 4840 5060 5120 5566 5632 5888 7040 7360 7744 8096 9680 10120 10240 11132 11264 11776 13915 14080 14720 15488 16192 19360 20240 22264 22528 23552 27830 28160 29440 30976 32384 38720 40480 44528 47104 55660 56320 58880 61952 64768 77440 80960 89056 111320 112640 117760 123904 129536 154880 161920 178112 222640 235520 247808 259072 309760 323840 356224 445280 518144 619520 647680 712448 890560 1239040 1295360 1424896 1781120 2590720 2849792 3562240 5699584 7124480 14248960 28497920
• Sum of all divisors σ(n): 78427440
• Sum of proper divisors (its aliquot sum) s(n): 49929520
• 28497920 is an abundant number, because the sum of its proper divisors (49929520) is greater than itself. Its abundance is 21431600

Bases of 28497920

• Binary: 1101100101101100000000000₂
• Hexadecimal: 0x1B2D800
• Base-36: GYT4W

Squares and roots of 28497920

• 28497920 squared (28497920²) is 812131444326400
• 28497920 cubed (28497920³) is 23144056929898201088000
• The square root of 28497920 is 5338.3443126123
• The cube root of 28497920 is 305.4483060637

Scales and comparisons

• 28,497,920 seconds is equal to 47 weeks, 20 hours, 5 minutes, 20 seconds.
• To count from 1 to 28,497,920 would take you about eighteen weeks!

  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 28497920 cubic inches would be around 25.5 feet tall.

Recreational maths with 28497920

• 28497920 backwards is 02979482
• The number of decimal digits it has is: 8
• The sum of 28497920's digits is 41
• More coming soon!