1998457240

Names of 1998457240

• Cardinal: 1998457240 can be written as One billion, nine hundred ninety-eight million, four hundred fifty-seven thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.99845724 × 10⁹

Factors of 1998457240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3125

Divisors of 1998457240

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 13 19 20 26 38 40 52 65 67 76 95 104 130 134 152 190 247 260 268 335 380 494 520 536 670 760 871 988 1235 1273 1340 1742 1976 2470 2546 2680 3019 3484 4355 4940 5092 6038 6365 6968 8710 9880 10184 12076 12730 15095 16549 17420 24152 25460 30190 33098 34840 39247 50920 57361 60380 66196 78494 82745 114722 120760 132392 156988 165490 196235 202273 229444 286805 313976 330980 392470 404546 458888 573610 661960 745693 784940 809092 1011365 1147220 1491386 1569880 1618184 2022730 2294440 2629549 2982772 3728465 3843187 4045460 5259098 5965544 7456930 7686374 8090920 10518196 13147745 14913860 15372748 19215935 21036392 26295490 29827720 30745496 38431870 49961431 52590980 76863740 99922862 105181960 153727480 199845724 249807155 399691448 499614310 999228620 1998457240
• Sum of all divisors σ(n): 5175072000
• Sum of proper divisors (its aliquot sum) s(n): 3176614760
• 1998457240 is an abundant number, because the sum of its proper divisors (3176614760) is greater than itself. Its abundance is 1178157520

Bases of 1998457240

• Binary: 1110111000111100000100110011000₂
• Hexadecimal: 0x771E0998
• Base-36: X1TVH4

Squares and roots of 1998457240

• 1998457240 squared (1998457240²) is 3993831340108417600
• 1998457240 cubed (1998457240³) is 7981501156978569537663424000
• The square root of 1998457240 is 44704.1076412447
• The cube root of 1998457240 is 1259.5970072607

Scales and comparisons

• 1,998,457,240 seconds is equal to 63 years, 28 weeks, 2 days, 7 hours, 40 seconds.
• To count from 1 to 1,998,457,240 would take you about one hundred twenty-seven years!

  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 1998457240 cubic inches would be around 105 feet tall.

Recreational maths with 1998457240

• 1998457240 backwards is 0427548991
• The number of decimal digits it has is: 10
• The sum of 1998457240's digits is 49
• More coming soon!