Base | Representation |
---|---|
bin | 1101101100101… |
… | …1100110111000 |
3 | 11000010010022000 |
4 | 3123023212320 |
5 | 104202111310 |
6 | 5411301000 |
7 | 1265243232 |
oct | 333134670 |
9 | 130103260 |
10 | 57457080 |
11 | 2a48439a |
12 | 172aa760 |
13 | bb99695 |
14 | 78b9252 |
15 | 509e4c0 |
hex | 36cb9b8 |
57457080 has 64 divisors (see below), whose sum is σ = 191527200. Its totient is φ = 15321600.
The previous prime is 57457069. The next prime is 57457087. The reversal of 57457080 is 8075475.
57457080 is a `hidden beast` number, since 5 + 7 + 4 + 570 + 80 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (57457087) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25521 + ... + 27680.
Almost surely, 257457080 is an apocalyptic number.
It is an amenable number.
57457080 is an abundant number, since it is smaller than the sum of its proper divisors (134070120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
57457080 is a wasteful number, since it uses less digits than its factorization.
57457080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 53221 (or 53211 counting only the distinct ones).
The product of its (nonzero) digits is 39200, while the sum is 36.
The square root of 57457080 is about 7580.0448547486. The cubic root of 57457080 is about 385.8760732224.
The spelling of 57457080 in words is "fifty-seven million, four hundred fifty-seven thousand, eighty".
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