28569420

Names of 28569420

• Cardinal: 28569420 can be written as Twenty-eight million, five hundred sixty-nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.856942 × 10⁷

Factors of 28569420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 375

Divisors of 28569420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 47 55 60 66 90 94 99 110 132 141 165 180 188 198 220 235 282 307 330 396 423 470 495 517 564 614 660 705 846 921 940 990 1034 1228 1410 1535 1551 1692 1842 1980 2068 2115 2585 2763 2820 3070 3102 3377 3684 4230 4605 4653 5170 5526 6140 6204 6754 7755 8460 9210 9306 10131 10340 11052 13508 13815 14429 15510 16885 18420 18612 20262 23265 27630 28858 30393 31020 33770 40524 43287 46530 50655 55260 57716 60786 67540 72145 86574 93060 101310 121572 129861 144290 151965 158719 173148 202620 216435 259722 288580 303930 317438 432870 476157 519444 607860 634876 649305 793595 865740 952314 1298610 1428471 1587190 1904628 2380785 2597220 2856942 3174380 4761570 5713884 7142355 9523140 14284710 28569420
• Sum of all divisors σ(n): 96864768
• Sum of proper divisors (its aliquot sum) s(n): 68295348
• 28569420 is an abundant number, because the sum of its proper divisors (68295348) is greater than itself. Its abundance is 39725928

Bases of 28569420

• Binary: 1101100111110111101001100₂
• Hexadecimal: 0x1B3EF4C
• Base-36: H0CB0

Squares and roots of 28569420

• 28569420 squared (28569420²) is 816211759136400
• 28569420 cubed (28569420³) is 23318696555706648888000
• The square root of 28569420 is 5345.0369502933
• The cube root of 28569420 is 305.7035447441

Scales and comparisons

• 28,569,420 seconds is equal to 47 weeks, 1 day, 15 hours, 57 minutes.
• To count from 1 to 28,569,420 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 28569420 cubic inches would be around 25.5 feet tall.

Recreational maths with 28569420

• 28569420 backwards is 02496582
• 28569420 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28569420's digits is 36
• More coming soon!