57438290 has 96 divisors (see below), whose sum is σ = 132378624. Its totient is φ = 17781120.

The previous prime is 57438289. The next prime is 57438301. The reversal of 57438290 is 9283475.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 452207 + ... + 452333.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^57438290 is an apocalyptic number.

57438290 is an abundant number, since it is smaller than the sum of its proper divisors (74940334).

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

57438290 is a wasteful number, since it uses less digits than its factorization.

57438290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 57438290 is about 7578.8053148237. The cubic root of 57438290 is about 385.8340047083.

The spelling of 57438290 in words is "fifty-seven million, four hundred thirty-eight thousand, two hundred ninety".