57756438 has 12 divisors (see below), whose sum is σ = 125138988. Its totient is φ = 19252140.

The previous prime is 57756437. The next prime is 57756469. The reversal of 57756438 is 83465775.

57756438 is a `hidden beast` number, since 57 + 7 + 564 + 38 = 666.

57756438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57756438² = 6671612260895688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57756393 and 57756402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57756437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1604328 + ... + 1604363.

It is an arithmetic number, because the mean of its divisors is an integer number (10428249).

Almost surely, 2^57756438 is an apocalyptic number.

57756438 is an abundant number, since it is smaller than the sum of its proper divisors (67382550).

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

57756438 is a wasteful number, since it uses less digits than its factorization.

57756438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208699 (or 3208696 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 57756438 is about 7599.7656542817. The cubic root of 57756438 is about 386.5450656399.

The spelling of 57756438 in words is "fifty-seven million, seven hundred fifty-six thousand, four hundred thirty-eight".