13258728

Names of 13258728

• Cardinal: 13258728 can be written as Thirteen million, two hundred fifty-eight thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.3258728 × 10⁷

Factors of 13258728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 128

Divisors of 13258728

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 37 42 54 56 63 72 74 79 81 84 108 111 126 148 158 162 168 189 216 222 237 252 259 296 316 324 333 378 444 474 504 518 553 567 632 648 666 711 756 777 888 948 999 1036 1106 1134 1332 1422 1512 1554 1659 1896 1998 2072 2133 2212 2268 2331 2664 2844 2923 2997 3108 3318 3996 4266 4424 4536 4662 4977 5688 5846 5994 6216 6399 6636 6993 7992 8532 8769 9324 9954 11692 11988 12798 13272 13986 14931 17064 17538 18648 19908 20461 20979 23384 23976 25596 26307 27972 29862 35076 39816 40922 41958 44793 51192 52614 55944 59724 61383 70152 78921 81844 83916 89586 105228 119448 122766 157842 163688 167832 179172 184149 210456 236763 245532 315684 358344 368298 473526 491064 552447 631368 736596 947052 1104894 1473192 1657341 1894104 2209788 3314682 4419576 6629364 13258728
• Sum of all divisors σ(n): 44140800
• Sum of proper divisors (its aliquot sum) s(n): 30882072
• 13258728 is an abundant number, because the sum of its proper divisors (30882072) is greater than itself. Its abundance is 17623344

Bases of 13258728

• Binary: 110010100100111111101000₂
• Hexadecimal: 0xCA4FE8
• Base-36: 7W6I0

Squares and roots of 13258728

• 13258728 squared (13258728²) is 175793868177984
• 13258728 cubed (13258728³) is 2330803082239745444352
• The square root of 13258728 is 3641.2536302761
• The cube root of 13258728 is 236.6831208115

Scales and comparisons

• 13,258,728 seconds is equal to 21 weeks, 6 days, 10 hours, 58 minutes, 48 seconds.
• To count from 1 to 13,258,728 would take you about thirty-two 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 13258728 cubic inches would be around 19.7 feet tall.

Recreational maths with 13258728

• 13258728 backwards is 82785231
• 13258728 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 13258728's digits is 36
• More coming soon!