21400912428

Names of 21400912428

• Cardinal: 21400912428 can be written as Twenty-one billion, four hundred million, nine hundred twelve thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1400912428 × 10¹⁰

Factors of 21400912428

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7717

Divisors of 21400912428

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 228 266 399 532 798 1596 2677 5009 5354 8031 10018 10708 15027 16062 18739 20036 30054 32124 35063 37478 50863 56217 60108 70126 74956 95171 101726 105189 112434 140252 152589 190342 203452 210378 224868 285513 305178 356041 380684 420756 571026 610356 666197 712082 1068123 1142052 1332394 1424164 1998591 2136246 2664788 3997182 4272492 7994364 13409093 26818186 40227279 53636372 80454558 93863651 160909116 187727302 254772767 281590953 375454604 509545534 563181906 764318301 1019091068 1126363812 1528636602 1783409369 3057273204 3566818738 5350228107 7133637476 10700456214 21400912428
• Sum of all divisors σ(n): 60107174400
• Sum of proper divisors (its aliquot sum) s(n): 38706261972
• 21400912428 is an abundant number, because the sum of its proper divisors (38706261972) is greater than itself. Its abundance is 17305349544

Bases of 21400912428

• Binary: 10011111011100110000000001000101100₂
• Hexadecimal: 0x4FB98022C
• Base-36: 9TXJTPO

Squares and roots of 21400912428

• 21400912428 squared (21400912428²) is 457999052750924855184
• 21400912428 cubed (21400912428³) is 9801597620029495321801365826752
• The square root of 21400912428 is 146290.5069647379
• The cube root of 21400912428 is 2776.3705559635

Scales and comparisons

• 21,400,912,428 seconds is equal to 680 years, 25 weeks, 17 hours, 53 minutes, 48 seconds.
• To count from 1 to 21,400,912,428 would take you about one thousand, three hundred sixty 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 21400912428 cubic inches would be around 231.4 feet tall.

Recreational maths with 21400912428

• 21400912428 backwards is 82421900412
• The number of decimal digits it has is: 11
• The sum of 21400912428's digits is 33
• More coming soon!