21628464

Names of 21628464

• Cardinal: 21628464 can be written as Twenty-one million, six hundred twenty-eight thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1628464 × 10⁷

Factors of 21628464

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 189

Divisors of 21628464

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 22 23 24 26 33 39 44 46 48 52 66 69 78 88 92 104 132 137 138 143 156 176 184 208 253 264 274 276 286 299 312 368 411 429 506 528 548 552 572 598 624 759 822 858 897 1012 1096 1104 1144 1196 1507 1518 1644 1716 1781 1794 2024 2192 2288 2392 3014 3036 3151 3288 3289 3432 3562 3588 4048 4521 4784 5343 6028 6072 6302 6576 6578 6864 7124 7176 9042 9453 9867 10686 12056 12144 12604 13156 14248 14352 18084 18906 19591 19734 21372 24112 25208 26312 28496 34661 36168 37812 39182 39468 40963 42744 50416 52624 58773 69322 72336 75624 78364 78936 81926 85488 103983 117546 122889 138644 151248 156728 157872 163852 207966 235092 245778 277288 313456 327704 415932 450593 470184 491556 554576 655408 831864 901186 940368 983112 1351779 1663728 1802372 1966224 2703558 3604744 5407116 7209488 10814232 21628464
• Sum of all divisors σ(n): 68995584
• Sum of proper divisors (its aliquot sum) s(n): 47367120
• 21628464 is an abundant number, because the sum of its proper divisors (47367120) is greater than itself. Its abundance is 25738656

Bases of 21628464

• Binary: 1010010100000011000110000₂
• Hexadecimal: 0x14A0630
• Base-36: CVKMO

Squares and roots of 21628464

• 21628464 squared (21628464²) is 467790454999296
• 21628464 cubed (21628464³) is 10117589015495893561344
• The square root of 21628464 is 4650.6412461079
• The cube root of 21628464 is 278.6176079731

Scales and comparisons

• 21,628,464 seconds is equal to 35 weeks, 5 days, 7 hours, 54 minutes, 24 seconds.
• To count from 1 to 21,628,464 would take you about four 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 21628464 cubic inches would be around 23.2 feet tall.

Recreational maths with 21628464

• 21628464 backwards is 46482612
• 21628464 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21628464's digits is 33
• More coming soon!