18870449472

Names of 18870449472

• Cardinal: 18870449472 can be written as Eighteen billion, eight hundred seventy million, four hundred forty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.8870449472 × 10¹⁰

Factors of 18870449472

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 520031

Divisors of 18870449472

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 72 81 84 96 108 112 126 144 162 168 189 192 216 224 252 288 324 336 378 432 448 504 567 576 648 672 756 864 1008 1134 1296 1344 1512 1728 2016 2268 2592 3024 4032 4536 5184 6048 9072 12096 18144 36288 520019 1040038 1560057 2080076 3120114 3640133 4160152 4680171 6240228 7280266 8320304 9360342 10920399 12480456 14040513 14560532 16640608 18720684 21840798 24960912 28081026 29121064 32761197 33281216 37441368 42121539 43681596 49921824 56162052 58242128 65522394 74882736 84243078 87363192 98283591 99843648 112324104 116484256 131044788 149765472 168486156 174726384 196567182 224648208 232968512 262089576 294850773 299530944 336972312 349452768 393134364 449296416 524179152 589701546 673944624 698905536 786268728 898592832 1048358304 1179403092 1347889248 1572537456 2096716608 2358806184 2695778496 3145074912 4717612368 6290149824 9435224736 18870449472
• Sum of all divisors σ(n): 63929178720
• Sum of proper divisors (its aliquot sum) s(n): 45058729248
• 18870449472 is an abundant number, because the sum of its proper divisors (45058729248) is greater than itself. Its abundance is 26188279776

Bases of 18870449472

• Binary: 10001100100110001000011010101000000₂
• Hexadecimal: 0x464C43540
• Base-36: 8O2Z800

Squares and roots of 18870449472

• 18870449472 squared (18870449472²) is 356093863275305078784
• 18870449472 cubed (18870449472³) is 6719651254225920914578451202048
• The square root of 18870449472 is 137369.7545750155
• The cube root of 18870449472 is 2662.3230254121

Scales and comparisons

• 18,870,449,472 seconds is equal to 600 years, 1 week, 23 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,870,449,472 would take you about one thousand, two hundred 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 18870449472 cubic inches would be around 221.9 feet tall.

Recreational maths with 18870449472

• 18870449472 backwards is 27494407881
• 18870449472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18870449472's digits is 54
• More coming soon!