28172361728

Names of 28172361728

• Cardinal: 28172361728 can be written as Twenty-eight billion, one hundred seventy-two million, three hundred sixty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8172361728 × 10¹⁰

Factors of 28172361728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1561

Divisors of 28172361728

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 443 448 512 886 896 1024 1109 1772 1792 2048 2218 3101 3544 3584 4096 4436 6202 7088 7168 7763 8192 8872 12404 14176 14336 15526 17744 24808 28352 28672 31052 35488 49616 56704 57344 62104 70976 99232 113408 124208 141952 198464 226816 248416 283904 396928 453632 491287 496832 567808 793856 907264 982574 993664 1135616 1587712 1814528 1965148 1987328 2271232 3175424 3439009 3629056 3930296 3974656 4542464 6350848 6878018 7860592 7949312 9084928 12701696 13756036 15721184 15898624 25403392 27512072 31442368 31797248 55024144 62884736 63594496 110048288 125769472 220096576 251538944 440193152 503077888 880386304 1006155776 1760772608 2012311552 3521545216 4024623104 7043090432 14086180864 28172361728
• Sum of all divisors σ(n): 64593581760
• Sum of proper divisors (its aliquot sum) s(n): 36421220032
• 28172361728 is an abundant number, because the sum of its proper divisors (36421220032) is greater than itself. Its abundance is 8248858304

Bases of 28172361728

• Binary: 11010001111001101000010000000000000₂
• Hexadecimal: 0x68F342000
• Base-36: CXX3HFK

Squares and roots of 28172361728

• 28172361728 squared (28172361728²) is 793681965333279145984
• 28172361728 cubed (28172361728³) is 22359895424359096177060166500352
• The square root of 28172361728 is 167846.2443071039
• The cube root of 28172361728 is 3042.8070840125

Scales and comparisons

• 28,172,361,728 seconds is equal to 895 years, 41 weeks, 2 days, 2 minutes, 8 seconds.
• To count from 1 to 28,172,361,728 would take you about one thousand, seven hundred ninety-one 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 28172361728 cubic inches would be around 253.6 feet tall.

Recreational maths with 28172361728

• 28172361728 backwards is 82716327182
• The number of decimal digits it has is: 11
• The sum of 28172361728's digits is 47
• More coming soon!