28129308672

Names of 28129308672

• Cardinal: 28129308672 can be written as Twenty-eight billion, one hundred twenty-nine million, three hundred eight thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.8129308672 × 10¹⁰

Factors of 28129308672

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 111

Divisors of 28129308672

• Number of divisors d(n): 234
• Complete list of divisors:
  1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 89 96 102 128 136 178 192 204 256 267 272 289 356 384 408 512 534 544 578 712 768 816 867 1024 1068 1088 1156 1424 1513 1536 1632 1734 2048 2136 2176 2312 2848 3026 3072 3264 3468 4096 4272 4352 4539 4624 5696 6052 6144 6528 6936 7921 8544 8704 9078 9248 11392 12104 12288 13056 13872 15842 17088 17408 18156 18496 22784 23763 24208 25721 26112 27744 31684 34176 34816 36312 36992 45568 47526 48416 51442 52224 55488 63368 68352 69632 72624 73984 77163 91136 95052 96832 102884 104448 110976 126736 134657 136704 145248 147968 154326 182272 190104 193664 205768 208896 221952 253472 269314 273408 290496 295936 308652 364544 380208 387328 403971 411536 443904 506944 538628 546816 580992 591872 617304 760416 774656 807942 823072 887808 1013888 1077256 1093632 1161984 1183744 1234608 1520832 1549312 1615884 1646144 1775616 2027776 2154512 2289169 2323968 2469216 3041664 3098624 3231768 3292288 3551232 4055552 4309024 4578338 4647936 4938432 6083328 6197248 6463536 6584576 6867507 8111104 8618048 9156676 9295872 9876864 12166656 12927072 13169152 13735014 16222208 17236096 18313352 18591744 19753728 24333312 25854144 26338304 27470028 32444416 34472192 36626704 39507456 48666624 51708288 52676608 54940056 68944384 73253408 79014912 97333248 103416576 105353216 109880112 137888768 146506816 158029824 206833152 219760224 275777536 293013632 316059648 413666304 439520448 551555072 586027264 827332608 879040896 1172054528 1654665216 1758081792 2344109056 3516163584 4688218112 7032327168 9376436224 14064654336 28129308672
• Sum of all divisors σ(n): 80579028028
• Sum of proper divisors (its aliquot sum) s(n): 52449719356
• 28129308672 is an abundant number, because the sum of its proper divisors (52449719356) is greater than itself. Its abundance is 24320410684

Bases of 28129308672

• Binary: 11010001100101000110011000000000000₂
• Hexadecimal: 0x68CA33000
• Base-36: CX7GPHC

Squares and roots of 28129308672

• 28129308672 squared (28129308672²) is 791258006364654403584
• 28129308672 cubed (28129308672³) is 22257540700222704309018399080448
• The square root of 28129308672 is 167717.9437985095
• The cube root of 28129308672 is 3041.2562859367

Scales and comparisons

• 28,129,308,672 seconds is equal to 894 years, 22 weeks, 16 hours, 51 minutes, 12 seconds.
• To count from 1 to 28,129,308,672 would take you about one thousand, seven hundred eighty-eight 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 28129308672 cubic inches would be around 253.4 feet tall.

Recreational maths with 28129308672

• 28129308672 backwards is 27680392182
• 28129308672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28129308672's digits is 48
• More coming soon!