28170072

Names of 28170072

• Cardinal: 28170072 can be written as Twenty-eight million, one hundred seventy thousand and seventy-two.

Scientific notation

• Scientific notation: 2.8170072 × 10⁷

Factors of 28170072

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 644

Divisors of 28170072

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 31 36 42 54 56 62 63 72 84 93 108 124 126 168 186 189 216 217 248 252 279 372 378 434 504 558 601 651 744 756 837 868 1116 1202 1302 1512 1674 1736 1803 1953 2232 2404 2604 3348 3606 3906 4207 4808 5208 5409 5859 6696 7212 7812 8414 10818 11718 12621 14424 15624 16227 16828 18631 21636 23436 25242 32454 33656 37262 37863 43272 46872 50484 55893 64908 74524 75726 100968 111786 113589 129816 130417 149048 151452 167679 223572 227178 260834 302904 335358 391251 447144 454356 503037 521668 670716 782502 908712 1006074 1043336 1173753 1341432 1565004 2012148 2347506 3130008 3521259 4024296 4695012 7042518 9390024 14085036 28170072
• Sum of all divisors σ(n): 92467200
• Sum of proper divisors (its aliquot sum) s(n): 64297128
• 28170072 is an abundant number, because the sum of its proper divisors (64297128) is greater than itself. Its abundance is 36127056

Bases of 28170072

• Binary: 1101011011101011101011000₂
• Hexadecimal: 0x1ADD758
• Base-36: GRS60

Squares and roots of 28170072

• 28170072 squared (28170072²) is 793552956485184
• 28170072 cubed (28170072³) is 22354443920000500213248
• The square root of 28170072 is 5307.5485866829
• The cube root of 28170072 is 304.2724646369

Scales and comparisons

• 28,170,072 seconds is equal to 46 weeks, 4 days, 1 hour, 1 minute, 12 seconds.
• To count from 1 to 28,170,072 would take you about seventeen 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 28170072 cubic inches would be around 25.4 feet tall.

Recreational maths with 28170072

• 28170072 backwards is 27007182
• 28170072 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28170072's digits is 27
• More coming soon!