57443868 has 36 divisors (see below), whose sum is σ = 149892288. Its totient is φ = 18529920.

The previous prime is 57443863. The next prime is 57443879. The reversal of 57443868 is 86834475.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57443863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24621 + ... + 26852.

Almost surely, 2^57443868 is an apocalyptic number.

It is an amenable number.

57443868 is an abundant number, since it is smaller than the sum of its proper divisors (92448420).

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

57443868 is a wasteful number, since it uses less digits than its factorization.

57443868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51514 (or 51509 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 57443868 is about 7579.1733058428. The cubic root of 57443868 is about 385.8464941261.

It can be divided in two parts, 57443 and 868, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 57443868 in words is "fifty-seven million, four hundred forty-three thousand, eight hundred sixty-eight".