28129461840

Names of 28129461840

• Cardinal: 28129461840 can be written as Twenty-eight billion, one hundred twenty-nine million, four hundred sixty-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.812946184 × 10¹⁰

Factors of 28129461840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 566246

Divisors of 28129461840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 27 30 36 40 45 46 48 54 60 69 72 80 90 92 108 115 120 135 138 144 180 184 207 216 230 240 270 276 345 360 368 414 432 460 540 552 621 690 720 828 920 1035 1080 1104 1242 1380 1656 1840 2070 2160 2484 2760 3105 3312 4140 4968 5520 6210 8280 9936 12420 16560 24840 49680 566213 1132426 1698639 2264852 2831065 3397278 4529704 5095917 5662130 6794556 8493195 9059408 10191834 11324260 13022899 13589112 15287751 16986390 20383668 22648520 25479585 26045798 27178224 30575502 33972780 39068697 40767336 45297040 50959170 52091596 61151004 65114495 67945560 76438755 78137394 81534672 101918340 104183192 117206091 122302008 130228990 135891120 152877510 156274788 195343485 203836680 208366384 234412182 244604016 260457980 305755020 312549576 351618273 390686970 407673360 468824364 520915960 586030455 611510040 625099152 703236546 781373940 937648728 1041831920 1172060910 1223020080 1406473092 1562747880 1758091365 1875297456 2344121820 2812946184 3125495760 3516182730 4688243640 5625892368 7032365460 9376487280 14064730920 28129461840
• Sum of all divisors σ(n): 101103171840
• Sum of proper divisors (its aliquot sum) s(n): 72973710000
• 28129461840 is an abundant number, because the sum of its proper divisors (72973710000) is greater than itself. Its abundance is 44844248160

Bases of 28129461840

• Binary: 11010001100101001011000011001010000₂
• Hexadecimal: 0x68CA58650
• Base-36: CX7JZO0

Squares and roots of 28129461840

• 28129461840 squared (28129461840²) is 791266623408016185600
• 28129461840 cubed (28129461840³) is 22257904288421442042937557504000
• The square root of 28129461840 is 167718.4004216593
• The cube root of 28129461840 is 3041.2618059479

Scales and comparisons

• 28,129,461,840 seconds is equal to 894 years, 22 weeks, 2 days, 11 hours, 24 minutes.
• To count from 1 to 28,129,461,840 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 28129461840 cubic inches would be around 253.4 feet tall.

Recreational maths with 28129461840

• 28129461840 backwards is 04816492182
• 28129461840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28129461840's digits is 45
• More coming soon!