28420736

Names of 28420736

• Cardinal: 28420736 can be written as Twenty-eight million, four hundred twenty thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.8420736 × 10⁷

Factors of 28420736

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 409

Divisors of 28420736

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 16 17 32 34 37 64 68 74 128 136 148 272 296 353 544 592 629 706 1088 1184 1258 1412 2176 2368 2516 2824 4736 5032 5648 6001 10064 11296 12002 13061 20128 22592 24004 26122 40256 45184 48008 52244 80512 96016 104488 192032 208976 222037 384064 417952 444074 768128 835904 888148 1671808 1776296 3552592 7105184 14210368 28420736
• Sum of all divisors σ(n): 61744680
• Sum of proper divisors (its aliquot sum) s(n): 33323944
• 28420736 is an abundant number, because the sum of its proper divisors (33323944) is greater than itself. Its abundance is 4903208

Bases of 28420736

• Binary: 1101100011010101010000000₂
• Hexadecimal: 0x1B1AA80
• Base-36: GX5KW

Squares and roots of 28420736

• 28420736 squared (28420736²) is 807738234781696
• 28420736 cubed (28420736³) is 22956515127836599648256
• The square root of 28420736 is 5331.1102033253
• The cube root of 28420736 is 305.1722971671

Scales and comparisons

• 28,420,736 seconds is equal to 46 weeks, 6 days, 22 hours, 38 minutes, 56 seconds.
• To count from 1 to 28,420,736 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 28420736 cubic inches would be around 25.4 feet tall.

Recreational maths with 28420736

• 28420736 backwards is 63702482
• 28420736 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28420736's digits is 32
• More coming soon!