28913472

Names of 28913472

• Cardinal: 28913472 can be written as Twenty-eight million, nine hundred thirteen thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.8913472 × 10⁷

Factors of 28913472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 184

Divisors of 28913472

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 71 72 84 96 101 112 126 142 144 168 192 202 213 224 252 284 288 303 336 404 426 448 497 504 568 576 606 639 672 707 808 852 909 994 1008 1136 1212 1278 1344 1414 1491 1616 1704 1818 1988 2016 2121 2272 2424 2556 2828 2982 3232 3408 3636 3976 4032 4242 4473 4544 4848 5112 5656 5964 6363 6464 6816 7171 7272 7952 8484 8946 9696 10224 11312 11928 12726 13632 14342 14544 15904 16968 17892 19392 20448 21513 22624 23856 25452 28684 29088 31808 33936 35784 40896 43026 45248 47712 50197 50904 57368 58176 64539 67872 71568 86052 95424 100394 101808 114736 129078 135744 143136 150591 172104 200788 203616 229472 258156 286272 301182 344208 401576 407232 451773 458944 516312 602364 688416 803152 903546 1032624 1204728 1376832 1606304 1807092 2065248 2409456 3212608 3614184 4130496 4818912 7228368 9637824 14456736 28913472
• Sum of all divisors σ(n): 96999552
• Sum of proper divisors (its aliquot sum) s(n): 68086080
• 28913472 is an abundant number, because the sum of its proper divisors (68086080) is greater than itself. Its abundance is 39172608

Bases of 28913472

• Binary: 1101110010010111101000000₂
• Hexadecimal: 0x1B92F40
• Base-36: H7PS0

Squares and roots of 28913472

• 28913472 squared (28913472²) is 835988863094784
• 28913472 cubed (28913472³) is 24171340585402870530048
• The square root of 28913472 is 5377.1248823139
• The cube root of 28913472 is 306.9258132943

Scales and comparisons

• 28,913,472 seconds is equal to 47 weeks, 5 days, 15 hours, 31 minutes, 12 seconds.
• To count from 1 to 28,913,472 would take you about nineteen 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 28913472 cubic inches would be around 25.6 feet tall.

Recreational maths with 28913472

• 28913472 backwards is 27431982
• 28913472 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28913472's digits is 36
• More coming soon!