| Base | Representation |
|---|---|
| bin | 1000111001000… |
| … | …00010100011000 |
| 3 | 12012100010021100 |
| 4 | 10130200110120 |
| 5 | 123043100042 |
| 6 | 11222311400 |
| 7 | 1563634053 |
| oct | 434402430 |
| 9 | 165303240 |
| 10 | 74581272 |
| 11 | 39110017 |
| 12 | 20b88560 |
| 13 | 125b3b3c |
| 14 | 9c95a9a |
| 15 | 683324c |
| hex | 4720518 |
74581272 has 96 divisors (see below), whose sum is σ = 218181600. Its totient is φ = 22944768.
The previous prime is 74581267. The next prime is 74581279. The reversal of 74581272 is 27218547.
74581272 is a `hidden beast` number, since 7 + 4 + 581 + 2 + 72 = 666.
It is a super-2 number, since 2×745812722 = 11124732266275968, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (74581279) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47248 + ... + 48800.
It is an arithmetic number, because the mean of its divisors is an integer number (2272725).
Almost surely, 274581272 is an apocalyptic number.
74581272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 74581272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109090800).
74581272 is an abundant number, since it is smaller than the sum of its proper divisors (143600328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
74581272 is a wasteful number, since it uses less digits than its factorization.
74581272 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1617 (or 1610 counting only the distinct ones).
The product of its digits is 31360, while the sum is 36.
The square root of 74581272 is about 8636.0449280906. The cubic root of 74581272 is about 420.9300478258.
74581272 divided by its sum of digits (36) gives a palindrome (2071702).
The spelling of 74581272 in words is "seventy-four million, five hundred eighty-one thousand, two hundred seventy-two".
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