57782238 has 8 divisors (see below), whose sum is σ = 115564488. Its totient is φ = 19260744.

The previous prime is 57782209. The next prime is 57782251. The reversal of 57782238 is 83228775.

It is a sphenic number, since it is the product of 3 distinct primes.

57782238 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 57782238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4815181 + ... + 4815192.

It is an arithmetic number, because the mean of its divisors is an integer number (14445561).

Almost surely, 2^57782238 is an apocalyptic number.

57782238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57782238 is a wasteful number, since it uses less digits than its factorization.

57782238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630378.

The product of its digits is 188160, while the sum is 42.

The square root of 57782238 is about 7601.4628855241. The cubic root of 57782238 is about 386.6026140763.

The spelling of 57782238 in words is "fifty-seven million, seven hundred eighty-two thousand, two hundred thirty-eight".