28729792728

Names of 28729792728

• Cardinal: 28729792728 can be written as Twenty-eight billion, seven hundred twenty-nine million, seven hundred ninety-two thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8729792728 × 10¹⁰

Factors of 28729792728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 656

Divisors of 28729792728

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 28 36 39 42 52 56 63 71 72 78 84 91 104 117 126 142 151 156 168 182 213 234 252 273 284 302 312 364 409 426 453 468 497 504 546 568 604 639 728 818 819 852 906 923 936 994 1057 1092 1208 1227 1278 1359 1491 1636 1638 1704 1812 1846 1963 1988 2114 2184 2454 2556 2718 2769 2863 2982 3171 3272 3276 3624 3681 3692 3926 3976 4228 4473 4908 5112 5317 5436 5538 5726 5889 5964 6342 6461 6552 7362 7384 7852 8307 8456 8589 8946 9513 9816 10634 10721 10872 11076 11452 11778 11928 12684 12922 13741 14724 15704 15951 16614 17178 17667 17892 19026 19383 21268 21442 22152 22904 23556 25368 25767 25844 27482 29039 29448 31902 32163 33228 34356 35334 35784 37219 38052 38766 41223 42536 42884 47112 47853 51534 51688 54964 58078 58149 61759 63804 64326 66456 68712 70668 74438 75047 76104 77532 82446 85768 87117 95706 96489 103068 109928 111657 116156 116298 123518 123669 127608 128652 139373 141336 148876 150094 155064 164892 174234 185277 191412 192978 203273 206136 223314 225141 232312 232596 247036 247338 257304 261351 278746 297752 300188 329784 334971 348468 370554 377507 382824 385956 406546 418119 432313 446628 450282 465192 494072 494676 522702 555831 557492 600376 609819 669942 675423 696936 741108 755014 771912 802867 813092 836238 864626 893256 900564 975611 989352 1045404 1111662 1114984 1132521 1219638 1254357 1296939 1339884 1350846 1482216 1510028 1605734 1626184 1672476 1729252 1801128 1829457 1951222 2090808 2223324 2265042 2408601 2439276 2508714 2593878 2642549 2679768 2701692 2926833 3020056 3211468 3344952 3397563 3458504 3658914 3890817 3902444 4384889 4446648 4530084 4817202 4878552 5017428 5187756 5285098 5403384 5620069 5853666 6422936 6795126 7225803 7317828 7781634 7804888 7927647 8769778 8780499 9060168 9634404 10034856 10375512 10570196 11240138 11707332 13154667 13590252 14451606 14635656 15563268 15855294 16860207 17539556 17560998 19268808 21140392 22480276 23414664 23782941 26309334 27180504 28903212 30694223 31126536 31710588 33720414 35079112 35121996 39464001 44960552 47565882 50580621 52618668 57003557 57806424 61388446 63421176 67440828 70243992 78928002 92082669 95131764 101161242 105237336 114007114 122776892 134881656 157856004 171010671 184165338 190263528 202322484 228014228 245553784 276248007 315712008 342021342 368330676 399024899 404644968 456028456 513032013 552496014 684042684 736661352 798049798 1026064026 1104992028 1197074697 1368085368 1596099596 2052128052 2209984056 2394149394 3192199192 3591224091 4104256104 4788298788 7182448182 9576597576 14364896364 28729792728
• Sum of all divisors σ(n): 97996953600
• Sum of proper divisors (its aliquot sum) s(n): 69267160872
• 28729792728 is an abundant number, because the sum of its proper divisors (69267160872) is greater than itself. Its abundance is 40537368144

Bases of 28729792728

• Binary: 11010110000011011011101100011011000₂
• Hexadecimal: 0x6B06DD8D8
• Base-36: D74Z5Y0

Squares and roots of 28729792728

• 28729792728 squared (28729792728²) is 825400990193841681984
• 28729792728 cubed (28729792728³) is 23713599365755032065447211812352
• The square root of 28729792728 is 169498.6511096769
• The cube root of 28729792728 is 3062.7449392275

Scales and comparisons

• 28,729,792,728 seconds is equal to 913 years, 26 weeks, 6 days, 17 hours, 58 minutes, 48 seconds.
• To count from 1 to 28,729,792,728 would take you about one thousand, eight 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 28729792728 cubic inches would be around 255.2 feet tall.

Recreational maths with 28729792728

• 28729792728 backwards is 82729792782
• 28729792728 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28729792728's digits is 63
• More coming soon!