21358194

Names of 21358194

• Cardinal: 21358194 can be written as Twenty-one million, three hundred fifty-eight thousand, one hundred ninety-four.

Scientific notation

• Scientific notation: 2.1358194 × 10⁷

Factors of 21358194

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 133

Divisors of 21358194

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 11 13 22 26 31 33 39 62 66 73 78 93 121 143 146 186 219 242 286 341 363 403 429 438 682 726 803 806 858 949 1023 1209 1573 1606 1898 2046 2263 2409 2418 2847 3146 3751 4433 4526 4719 4818 5694 6789 7502 8833 8866 9438 10439 11253 13299 13578 17666 20878 22506 24893 26499 26598 29419 31317 48763 49786 52998 58838 62634 74679 88257 97526 114829 146289 149358 176514 229658 273823 292578 323609 344487 547646 647218 688974 821469 970827 1642938 1941654 3559699 7119398 10679097 21358194
• Sum of all divisors σ(n): 52910592
• Sum of proper divisors (its aliquot sum) s(n): 31552398
• 21358194 is an abundant number, because the sum of its proper divisors (31552398) is greater than itself. Its abundance is 10194204

Bases of 21358194

• Binary: 1010001011110011001110010₂
• Hexadecimal: 0x145E672
• Base-36: CPS36

Squares and roots of 21358194

• 21358194 squared (21358194²) is 456172450941636
• 21358194 cubed (21358194³) is 9743019704666944365384
• The square root of 21358194 is 4621.4926160275
• The cube root of 21358194 is 277.4522018155

Scales and comparisons

• 21,358,194 seconds is equal to 35 weeks, 2 days, 4 hours, 49 minutes, 54 seconds.
• To count from 1 to 21,358,194 would take you about six days!

  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 21358194 cubic inches would be around 23.1 feet tall.

Recreational maths with 21358194

• 21358194 backwards is 49185312
• 21358194 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21358194's digits is 33
• More coming soon!