57218396 has 12 divisors (see below), whose sum is σ = 106022448. Its totient is φ = 26926272.

The previous prime is 57218389. The next prime is 57218401. The reversal of 57218396 is 69381275.

57218396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420656 + ... + 420791.

It is an arithmetic number, because the mean of its divisors is an integer number (8835204).

Almost surely, 2^57218396 is an apocalyptic number.

It is an amenable number.

57218396 is a deficient number, since it is larger than the sum of its proper divisors (48804052).

57218396 is a wasteful number, since it uses less digits than its factorization.

57218396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841468 (or 841466 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 57218396 is about 7564.2842358018. The cubic root of 57218396 is about 385.3410055690.

The spelling of 57218396 in words is "fifty-seven million, two hundred eighteen thousand, three hundred ninety-six".