21098070

Names of 21098070

• Cardinal: 21098070 can be written as Twenty-one million, ninety-eight thousand and seventy.

Scientific notation

• Scientific notation: 2.109807 × 10⁷

Factors of 21098070

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 78

Divisors of 21098070

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 54 61 63 70 81 90 105 122 126 135 162 183 189 210 270 305 315 366 378 405 427 549 567 610 630 810 854 915 945 1098 1134 1281 1647 1830 1890 2135 2562 2745 2835 3294 3721 3843 4270 4941 5490 5670 6405 7442 7686 8235 9882 11163 11529 12810 16470 18605 19215 22326 23058 24705 26047 33489 34587 37210 38430 49410 52094 55815 57645 66978 69174 78141 100467 111630 115290 130235 156282 167445 172935 200934 234423 260470 301401 334890 345870 390705 468846 502335 602802 703269 781410 1004670 1172115 1406538 1507005 2109807 2344230 3014010 3516345 4219614 7032690 10549035 21098070
• Sum of all divisors σ(n): 65914992
• Sum of proper divisors (its aliquot sum) s(n): 44816922
• 21098070 is an abundant number, because the sum of its proper divisors (44816922) is greater than itself. Its abundance is 23718852

Bases of 21098070

• Binary: 1010000011110111001010110₂
• Hexadecimal: 0x141EE56
• Base-36: CK7DI

Squares and roots of 21098070

• 21098070 squared (21098070²) is 445128557724900
• 21098070 cubed (21098070³) is 9391353469878980943000
• The square root of 21098070 is 4593.2635456721
• The cube root of 21098070 is 276.3212233517

Scales and comparisons

• 21,098,070 seconds is equal to 34 weeks, 6 days, 4 hours, 34 minutes, 30 seconds.
• To count from 1 to 21,098,070 would take you about two 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 21098070 cubic inches would be around 23 feet tall.

Recreational maths with 21098070

• 21098070 backwards is 07089012
• 21098070 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21098070's digits is 27
• More coming soon!