57208830 has 32 divisors (see below), whose sum is σ = 156916224. Its totient is φ = 13076256.

The previous prime is 57208807. The next prime is 57208831. The reversal of 57208830 is 3880275.

It is a junction number, because it is equal to n+sod(n) for n = 57208791 and 57208800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57208831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136002 + ... + 136421.

It is an arithmetic number, because the mean of its divisors is an integer number (4903632).

Almost surely, 2^57208830 is an apocalyptic number.

57208830 is an abundant number, since it is smaller than the sum of its proper divisors (99707394).

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

57208830 is a wasteful number, since it uses less digits than its factorization.

57208830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272440.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 57208830 is about 7563.6518957445. The cubic root of 57208830 is about 385.3195300893.

The spelling of 57208830 in words is "fifty-seven million, two hundred eight thousand, eight hundred thirty".