30042720

Names of 30042720

• Cardinal: 30042720 can be written as Thirty million, forty-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 3.004272 × 10⁷

Factors of 30042720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 714

Divisors of 30042720

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 32 36 40 45 48 60 62 72 80 90 93 96 120 124 144 155 160 180 186 240 248 279 288 310 360 372 465 480 496 558 620 673 720 744 930 992 1116 1240 1346 1395 1440 1488 1860 2019 2232 2480 2692 2790 2976 3365 3720 4038 4464 4960 5384 5580 6057 6730 7440 8076 8928 10095 10768 11160 12114 13460 14880 16152 20190 20863 21536 22320 24228 26920 30285 32304 40380 41726 44640 48456 53840 60570 62589 64608 80760 83452 96912 104315 107680 121140 125178 161520 166904 187767 193824 208630 242280 250356 312945 323040 333808 375534 417260 484560 500712 625890 667616 751068 834520 938835 969120 1001424 1251780 1502136 1669040 1877670 2002848 2503560 3004272 3338080 3755340 5007120 6008544 7510680 10014240 15021360 30042720
• Sum of all divisors σ(n): 105985152
• Sum of proper divisors (its aliquot sum) s(n): 75942432
• 30042720 is an abundant number, because the sum of its proper divisors (75942432) is greater than itself. Its abundance is 45899712

Bases of 30042720

• Binary: 1110010100110101001100000₂
• Hexadecimal: 0x1CA6A60
• Base-36: HVX40

Squares and roots of 30042720

• 30042720 squared (30042720²) is 902565024998400
• 30042720 cubed (30042720³) is 27115508327819931648000
• The square root of 30042720 is 5481.1239723253
• The cube root of 30042720 is 310.8706706117

Scales and comparisons

• 30,042,720 seconds is equal to 49 weeks, 4 days, 17 hours, 12 minutes.
• To count from 1 to 30,042,720 would take you about twenty-two 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 30042720 cubic inches would be around 25.9 feet tall.

Recreational maths with 30042720

• 30042720 backwards is 02724003
• 30042720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30042720's digits is 18
• More coming soon!