28972021520

Names of 28972021520

• Cardinal: 28972021520 can be written as Twenty-eight billion, nine hundred seventy-two million, twenty-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.897202152 × 10¹⁰

Factors of 28972021520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 811

Divisors of 28972021520

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 13 16 17 20 26 34 40 52 65 68 80 85 104 130 136 169 170 208 221 233 260 272 338 340 442 466 520 541 676 680 845 884 932 1040 1082 1105 1165 1352 1360 1690 1768 1864 2164 2210 2330 2704 2705 2873 3029 3380 3536 3728 3961 4328 4420 4660 5410 5746 6058 6760 7033 7922 8656 8840 9197 9320 10820 11492 12116 13520 14066 14365 15145 15844 17680 18394 18640 19805 21640 22984 24232 28132 28730 30290 31688 35165 36788 39377 39610 43280 45968 45985 48464 51493 56264 57460 60580 63376 70330 73576 78754 79220 91429 91970 102986 112528 114920 119561 121160 126053 140660 147152 157508 158440 182858 183940 196885 205972 229840 239122 242320 252106 257465 281320 315016 316880 365716 367880 393770 411944 457145 478244 504212 514930 562640 597805 630032 630265 669409 731432 735760 787540 823888 914290 956488 1008424 1029860 1195610 1260530 1338818 1462864 1554293 1575080 1638689 1828580 1912976 2016848 2059720 2142901 2391220 2521060 2677636 3108586 3150160 3277378 3347045 3657160 4119440 4285802 4782440 5042120 5355272 6217172 6554756 6694090 7314320 7771465 8193445 8571604 9564880 10084240 10710544 10714505 12434344 13109512 13388180 15542930 16386890 17143208 21302957 21429010 24868688 26219024 26776360 27857713 31085860 32773780 34286416 42605914 42858020 53552720 55715426 62171720 65547560 85211828 85716040 106514785 111430852 124343440 131095120 139288565 170423656 171432080 213029570 222861704 278577130 340847312 362150269 426059140 445723408 557154260 724300538 852118280 1114308520 1448601076 1704236560 1810751345 2228617040 2897202152 3621502690 5794404304 7243005380 14486010760 28972021520
• Sum of all divisors σ(n): 77705486352
• Sum of proper divisors (its aliquot sum) s(n): 48733464832
• 28972021520 is an abundant number, because the sum of its proper divisors (48733464832) is greater than itself. Its abundance is 19761443312

Bases of 28972021520

• Binary: 11010111110110111011111011100010000₂
• Hexadecimal: 0x6BEDDF710
• Base-36: DB56YVK

Squares and roots of 28972021520

• 28972021520 squared (28972021520²) is 839378030955343110400
• 28972021520 cubed (28972021520³) is 24318478376253426753492535808000
• The square root of 28972021520 is 170211.6961903617
• The cube root of 28972021520 is 3071.3284761075

Scales and comparisons

• 28,972,021,520 seconds is equal to 921 years, 11 weeks, 3 days, 7 hours, 45 minutes, 20 seconds.
• To count from 1 to 28,972,021,520 would take you about one thousand, eight hundred forty-two 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 28972021520 cubic inches would be around 255.9 feet tall.

Recreational maths with 28972021520

• 28972021520 backwards is 02512027982
• The number of decimal digits it has is: 11
• The sum of 28972021520's digits is 38
• More coming soon!