28198440

Names of 28198440

• Cardinal: 28198440 can be written as Twenty-eight million, one hundred ninety-eight thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.819844 × 10⁷

Factors of 28198440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 149

Divisors of 28198440

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 29 30 36 37 40 45 58 60 72 73 74 87 90 111 116 120 145 146 148 174 180 185 219 222 232 261 290 292 296 333 348 360 365 370 435 438 444 522 555 580 584 657 666 696 730 740 870 876 888 1044 1073 1095 1110 1160 1305 1314 1332 1460 1480 1665 1740 1752 2088 2117 2146 2190 2220 2610 2628 2664 2701 2920 3219 3285 3330 3480 4234 4292 4380 4440 5220 5256 5365 5402 6351 6438 6570 6660 8103 8468 8584 8760 9657 10440 10585 10730 10804 12702 12876 13140 13320 13505 16095 16206 16936 19053 19314 21170 21460 21608 24309 25404 25752 26280 27010 31755 32190 32412 38106 38628 40515 42340 42920 48285 48618 50808 54020 63510 64380 64824 76212 77256 78329 81030 84680 95265 96570 97236 108040 121545 127020 128760 152424 156658 162060 190530 193140 194472 234987 243090 254040 313316 324120 381060 386280 391645 469974 486180 626632 704961 762120 783290 939948 972360 1174935 1409922 1566580 1879896 2349870 2819844 3133160 3524805 4699740 5639688 7049610 9399480 14099220 28198440
• Sum of all divisors σ(n): 98701200
• Sum of proper divisors (its aliquot sum) s(n): 70502760
• 28198440 is an abundant number, because the sum of its proper divisors (70502760) is greater than itself. Its abundance is 42304320

Bases of 28198440

• Binary: 1101011100100011000101000₂
• Hexadecimal: 0x1AE4628
• Base-36: GSE20

Squares and roots of 28198440

• 28198440 squared (28198440²) is 795152018433600
• 28198440 cubed (28198440³) is 22422046482678763584000
• The square root of 28198440 is 5310.2203344117
• The cube root of 28198440 is 304.3745671505

Scales and comparisons

• 28,198,440 seconds is equal to 46 weeks, 4 days, 8 hours, 54 minutes.
• To count from 1 to 28,198,440 would take you about seventeen 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 28198440 cubic inches would be around 25.4 feet tall.

Recreational maths with 28198440

• 28198440 backwards is 04489182
• 28198440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28198440's digits is 36
• More coming soon!