57430018 has 4 divisors (see below), whose sum is σ = 86145030. Its totient is φ = 28715008.

The previous prime is 57430013. The next prime is 57430067. The reversal of 57430018 is 81003475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 683929 = 7533^2 + 827^2 .

It is not an unprimeable number, because it can be changed into a prime (57430013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14357503 + ... + 14357506.

Almost surely, 2^57430018 is an apocalyptic number.

57430018 is a deficient number, since it is larger than the sum of its proper divisors (28715012).

57430018 is a wasteful number, since it uses less digits than its factorization.

57430018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28715011.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 57430018 is about 7578.2595627228. The cubic root of 57430018 is about 385.8154818024.

The spelling of 57430018 in words is "fifty-seven million, four hundred thirty thousand, eighteen".