57749406 has 32 divisors (see below), whose sum is σ = 135692928. Its totient is φ = 16153440.

The previous prime is 57749401. The next prime is 57749407. The reversal of 57749406 is 60494775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57749401) 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, 32796 + ... + 34511.

It is an arithmetic number, because the mean of its divisors is an integer number (4240404).

Almost surely, 2^57749406 is an apocalyptic number.

57749406 is an abundant number, since it is smaller than the sum of its proper divisors (77943522).

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

57749406 is a wasteful number, since it uses less digits than its factorization.

57749406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67336.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 57749406 is about 7599.3029943542. The cubic root of 57749406 is about 386.5293773731.

The spelling of 57749406 in words is "fifty-seven million, seven hundred forty-nine thousand, four hundred six".