28989840

Names of 28989840

• Cardinal: 28989840 can be written as Twenty-eight million, nine hundred eighty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.898984 × 10⁷

Factors of 28989840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 239

Divisors of 28989840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 79 80 88 110 120 132 139 158 165 176 220 237 240 264 278 316 330 395 417 440 474 528 556 632 660 695 790 834 869 880 948 1112 1185 1264 1320 1390 1529 1580 1668 1738 1896 2085 2224 2370 2607 2640 2780 3058 3160 3336 3476 3792 4170 4345 4587 4740 5214 5560 6116 6320 6672 6952 7645 8340 8690 9174 9480 10428 10981 11120 12232 13035 13904 15290 16680 17380 18348 18960 20856 21962 22935 24464 26070 30580 32943 33360 34760 36696 41712 43924 45870 52140 54905 61160 65886 69520 73392 87848 91740 104280 109810 120791 122320 131772 164715 175696 183480 208560 219620 241582 263544 329430 362373 366960 439240 483164 527088 603955 658860 724746 878480 966328 1207910 1317720 1449492 1811865 1932656 2415820 2635440 2898984 3623730 4831640 5797968 7247460 9663280 14494920 28989840
• Sum of all divisors σ(n): 99993600
• Sum of proper divisors (its aliquot sum) s(n): 71003760
• 28989840 is an abundant number, because the sum of its proper divisors (71003760) is greater than itself. Its abundance is 42013920

Bases of 28989840

• Binary: 1101110100101100110010000₂
• Hexadecimal: 0x1BA5990
• Base-36: H9CPC

Squares and roots of 28989840

• 28989840 squared (28989840²) is 840410823225600
• 28989840 cubed (28989840³) is 24363375299578427904000
• The square root of 28989840 is 5384.2213921791
• The cube root of 28989840 is 307.1957993675

Scales and comparisons

• 28,989,840 seconds is equal to 47 weeks, 6 days, 12 hours, 44 minutes.
• To count from 1 to 28,989,840 would take you about nineteen weeks!

  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 28989840 cubic inches would be around 25.6 feet tall.

Recreational maths with 28989840

• 28989840 backwards is 04898982
• 28989840 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28989840's digits is 48
• More coming soon!