21170831240

Names of 21170831240

• Cardinal: 21170831240 can be written as Twenty-one billion, one hundred seventy million, eight hundred thirty-one thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.117083124 × 10¹⁰

Factors of 21170831240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2523

Divisors of 21170831240

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 13 20 26 31 40 52 62 65 104 124 130 155 248 260 310 403 520 620 773 806 1240 1546 1612 1699 2015 3092 3224 3398 3865 4030 6184 6796 7730 8060 8495 10049 13592 15460 16120 16990 20098 22087 23963 30920 33980 40196 44174 47926 50245 52669 67960 80392 88348 95852 100490 105338 110435 119815 176696 191704 200980 210676 220870 239630 263345 311519 401960 421352 441740 479260 526690 623038 684697 883480 958520 1053380 1246076 1313327 1369394 1557595 2106760 2492152 2626654 2738788 3115190 3423485 5253308 5477576 6230380 6566635 6846970 10506616 12460760 13133270 13693940 17073251 26266540 27387880 34146502 40713137 52533080 68293004 81426274 85366255 136586008 162852548 170732510 203565685 325705096 341465020 407131370 529270781 682930040 814262740 1058541562 1628525480 2117083124 2646353905 4234166248 5292707810 10585415620 21170831240
• Sum of all divisors σ(n): 53053056000
• Sum of proper divisors (its aliquot sum) s(n): 31882224760
• 21170831240 is an abundant number, because the sum of its proper divisors (31882224760) is greater than itself. Its abundance is 10711393520

Bases of 21170831240

• Binary: 10011101101111000010011111110001000₂
• Hexadecimal: 0x4EDE13F88
• Base-36: 9Q4KDXK

Squares and roots of 21170831240

• 21170831240 squared (21170831240²) is 448204095392559937600
• 21170831240 cubed (21170831240³) is 9488853264632747990514530624000
• The square root of 21170831240 is 145501.9973746065
• The cube root of 21170831240 is 2766.3850997789

Scales and comparisons

• 21,170,831,240 seconds is equal to 673 years, 8 weeks, 4 days, 18 hours, 27 minutes, 20 seconds.
• To count from 1 to 21,170,831,240 would take you about one thousand, three hundred forty-six 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 21170831240 cubic inches would be around 230.5 feet tall.

Recreational maths with 21170831240

• 21170831240 backwards is 04213807112
• The number of decimal digits it has is: 11
• The sum of 21170831240's digits is 29
• More coming soon!