57438730 has 16 divisors (see below), whose sum is σ = 103928904. Its totient is φ = 22855680.

The previous prime is 57438707. The next prime is 57438737. The reversal of 57438730 is 3783475.

It can be written as a sum of positive squares in 4 ways, for example, as 28483569 + 28955161 = 5337^2 + 5381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57438730.

It is not an unprimeable number, because it can be changed into a prime (57438737) 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, 12951 + ... + 16810.

Almost surely, 2^57438730 is an apocalyptic number.

57438730 is a deficient number, since it is larger than the sum of its proper divisors (46490174).

57438730 is a wasteful number, since it uses less digits than its factorization.

57438730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29961.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 57438730 is about 7578.8343430900. The cubic root of 57438730 is about 385.8349899194.

It can be divided in two parts, 574 and 38730, that added together give a cube (39304 = 34³).

The spelling of 57438730 in words is "fifty-seven million, four hundred thirty-eight thousand, seven hundred thirty".