Search a number
-
+
57456868 = 2272338807
BaseRepresentation
bin1101101100101…
…1100011100100
311000010010000011
43123023203210
5104202104433
65411300004
71265242510
oct333134344
9130103004
1057456868
112a484217
12172aa604
13bb99561
1478b9140
15509e3cd
hex36cb8e4

57456868 has 24 divisors (see below), whose sum is σ = 115420032. Its totient is φ = 24515904.

The previous prime is 57456863. The next prime is 57456869. The reversal of 57456868 is 86865475.

It is not an unprimeable number, because it can be changed into a prime (57456863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (4809168).

Almost surely, 257456868 is an apocalyptic number.

It is an amenable number.

57456868 is an abundant number, since it is smaller than the sum of its proper divisors (57963164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57456868 is a wasteful number, since it uses less digits than its factorization.

57456868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9051 (or 9049 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The square root of 57456868 is about 7580.0308706495. The cubic root of 57456868 is about 385.8755986314.

The spelling of 57456868 in words is "fifty-seven million, four hundred fifty-six thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 28 233 466 932 1631 3262 6524 8807 17614 35228 61649 123298 246596 2052031 4104062 8208124 14364217 28728434 57456868