28129998400
28,129,998,400 is an even composite number composed of four prime numbers multiplied together.
28129998400 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred eighty-nine divisors.
Prime factorization of 28129998400:
26 × 52 × 72 × 5992
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 7 × 599 × 599)See below for interesting mathematical facts about the number 28129998400 from the Numbermatics database.
Names of 28129998400
- Cardinal: 28129998400 can be written as Twenty-eight billion, one hundred twenty-nine million, nine hundred ninety-eight thousand, four hundred.
Scientific notation
- Scientific notation: 2.81299984 × 1010
Factors of 28129998400
Divisors of 28129998400
- Number of divisors d(n): 189
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 64 70 80 98 100 112 140 160 175 196 200 224 245 280 320 350 392 400 448 490 560 599 700 784 800 980 1120 1198 1225 1400 1568 1600 1960 2240 2396 2450 2800 2995 3136 3920 4193 4792 4900 5600 5990 7840 8386 9584 9800 11200 11980 14975 15680 16772 19168 19600 20965 23960 29351 29950 33544 38336 39200 41930 47920 58702 59900 67088 78400 83860 95840 104825 117404 119800 134176 146755 167720 191680 209650 234808 239600 268352 293510 335440 358801 419300 469616 479200 587020 670880 717602 733775 838600 939232 958400 1174040 1341760 1435204 1467550 1677200 1794005 1878464 2348080 2511607 2870408 2935100 3354400 3588010 4696160 5023214 5740816 5870200 6708800 7176020 8970025 9392320 10046428 11481632 11740400 12558035 14352040 17581249 17940050 20092856 22963264 23480800 25116070 28704080 35162498 35880100 40185712 46961600 50232140 57408160 62790175 70324996 71760200 80371424 87906245 100464280 114816320 125580350 140649992 143520400 160742848 175812490 200928560 251160700 281299984 287040800 351624980 401857120 439531225 502321400 562599968 574081600 703249960 803714240 879062450 1004642800 1125199936 1406499920 1758124900 2009285600 2812999840 3516249800 4018571200 5625999680 7032499600 14064999200 28129998400
- Sum of all divisors σ(n): 80652819009
- Sum of proper divisors (its aliquot sum) s(n): 52522820609
- 28129998400 is an abundant number, because the sum of its proper divisors (52522820609) is greater than itself. Its abundance is 24392822209
Bases of 28129998400
- Binary: 110100011001010110110110110010000002
- Hexadecimal: 0x68CADB640
- Base-36: CX7VHOG
Squares and roots of 28129998400
- 28129998400 squared (281299984002) is 791296809984002560000
- 28129998400 cubed (281299984003) is 22259177998775096038395904000000
-
28129998400 is a
perfect square number . Itssquare root is 167720 -
The
cube root of 28129998400 is 3041.2811428395
Scales and comparisons
How big is 28129998400?- 28,129,998,400 seconds is equal to 894 years, 23 weeks, 1 day, 16 hours, 26 minutes, 40 seconds.
-
To count from 1 to 28,129,998,400 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 28129998400 cubic inches would be around 253.4 feet tall.
Recreational maths with 28129998400
- 28129998400 backwards is 00489992182
- The number of decimal digits it has is: 11
- The sum of 28129998400's digits is 52
- More coming soon!
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