28138788090

Names of 28138788090

• Cardinal: 28138788090 can be written as Twenty-eight billion, one hundred thirty-eight million, seven hundred eighty-eight thousand and ninety.

Scientific notation

• Scientific notation: 2.813878809 × 10¹⁰

Factors of 28138788090

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5802

Divisors of 28138788090

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 53 63 70 90 105 106 126 151 159 210 265 302 315 318 371 453 477 530 630 742 755 795 906 954 1057 1113 1359 1510 1590 1855 2114 2226 2265 2385 2718 3171 3339 3710 4530 4770 5285 5565 5581 6342 6678 6795 8003 9513 10570 11130 11162 13590 15855 16006 16695 16743 19026 24009 27905 31710 33390 33486 39067 40015 47565 48018 50229 55810 56021 72027 78134 80030 83715 95130 100458 112042 117201 120045 144054 167430 168063 195335 234402 240090 251145 280105 295793 336126 351603 360135 390670 502290 504189 560210 586005 591586 703206 720270 840315 842731 887379 1008378 1172010 1478965 1680630 1685462 1758015 1774758 2070551 2520945 2528193 2662137 2957930 3516030 4141102 4213655 4436895 5041890 5056386 5324274 5899117 6211653 7584579 8427310 8873790 10352755 11798234 12423306 12640965 13310685 15169158 17697351 18634959 20705510 25281930 26621370 29495585 31058265 35394702 37269918 37922895 44664743 53092053 58991170 62116530 75845790 88486755 89329486 93174795 106184106 133994229 176973510 186349590 223323715 265460265 267988458 312653201 401982687 446647430 530920530 625306402 669971145 803965374 937959603 1339942290 1563266005 1875919206 2009913435 2813878809 3126532010 4019826870 4689798015 5627757618 9379596030 14069394045 28138788090
• Sum of all divisors σ(n): 85769528832
• Sum of proper divisors (its aliquot sum) s(n): 57630740742
• 28138788090 is an abundant number, because the sum of its proper divisors (57630740742) is greater than itself. Its abundance is 29491952652

Bases of 28138788090

• Binary: 11010001101001100111101010011111010₂
• Hexadecimal: 0x68D33D4FA
• Base-36: CXD3VUI

Squares and roots of 28138788090

• 28138788090 squared (28138788090²) is 791791395173925848100
• 28138788090 cubed (28138788090³) is 22280050280284548133059429129000
• The square root of 28138788090 is 167746.2014174985
• The cube root of 28138788090 is 3041.5978762933

Scales and comparisons

• 28,138,788,090 seconds is equal to 894 years, 37 weeks, 5 days, 10 hours, 1 minute, 30 seconds.
• To count from 1 to 28,138,788,090 would take you about one thousand, seven hundred eighty-nine 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 28138788090 cubic inches would be around 253.5 feet tall.

Recreational maths with 28138788090

• 28138788090 backwards is 09088783182
• The number of decimal digits it has is: 11
• The sum of 28138788090's digits is 54
• More coming soon!