28428736

Names of 28428736

• Cardinal: 28428736 can be written as Twenty-eight million, four hundred twenty-eight thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.8428736 × 10⁷

Factors of 28428736

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 152

Divisors of 28428736

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 7 8 14 16 23 28 31 32 46 56 62 64 89 92 112 124 161 178 184 217 224 248 322 356 368 434 448 496 623 644 712 713 736 868 992 1246 1288 1424 1426 1472 1736 1984 2047 2492 2576 2759 2848 2852 3472 4094 4984 4991 5152 5518 5696 5704 6944 8188 9968 9982 10304 11036 11408 13888 14329 16376 19313 19936 19964 22072 22816 28658 32752 38626 39872 39928 44144 45632 57316 63457 65504 77252 79856 88288 114632 126914 131008 154504 159712 176576 229264 253828 309008 319424 444199 458528 507656 618016 888398 917056 1015312 1236032 1776796 2030624 3553592 4061248 7107184 14214368 28428736
• Sum of all divisors σ(n): 70225920
• Sum of proper divisors (its aliquot sum) s(n): 41797184
• 28428736 is an abundant number, because the sum of its proper divisors (41797184) is greater than itself. Its abundance is 13368448

Bases of 28428736

• Binary: 1101100011100100111000000₂
• Hexadecimal: 0x1B1C9C0
• Base-36: GXBR4

Squares and roots of 28428736

• 28428736 squared (28428736²) is 808193030557696
• 28428736 cubed (28428736³) is 22975906302764672352256
• The square root of 28428736 is 5331.8604632905
• The cube root of 28428736 is 305.2009282499

Scales and comparisons

• 28,428,736 seconds is equal to 47 weeks, 52 minutes, 16 seconds.
• To count from 1 to 28,428,736 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 28428736 cubic inches would be around 25.4 feet tall.

Recreational maths with 28428736

• 28428736 backwards is 63782482
• The number of decimal digits it has is: 8
• The sum of 28428736's digits is 40
• More coming soon!