57208238 has 4 divisors (see below), whose sum is σ = 85812360. Its totient is φ = 28604118.

The previous prime is 57208231. The next prime is 57208241. The reversal of 57208238 is 83280275.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 57208198 and 57208207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57208231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302058 + ... + 14302061.

It is an arithmetic number, because the mean of its divisors is an integer number (21453090).

Almost surely, 2^57208238 is an apocalyptic number.

57208238 is a deficient number, since it is larger than the sum of its proper divisors (28604122).

57208238 is a wasteful number, since it uses less digits than its factorization.

57208238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28604121.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 57208238 is about 7563.6127611083. The cubic root of 57208238 is about 385.3182009825.

The spelling of 57208238 in words is "fifty-seven million, two hundred eight thousand, two hundred thirty-eight".