57878478 has 24 divisors (see below), whose sum is σ = 143318448. Its totient is φ = 16536672.

The previous prime is 57878477. The next prime is 57878497. The reversal of 57878478 is 87487875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57878477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229551 + ... + 229802.

It is an arithmetic number, because the mean of its divisors is an integer number (5971602).

Almost surely, 2^57878478 is an apocalyptic number.

57878478 is an abundant number, since it is smaller than the sum of its proper divisors (85439970).

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

57878478 is a wasteful number, since it uses less digits than its factorization.

57878478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459368 (or 459365 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

The square root of 57878478 is about 7607.7906122606. The cubic root of 57878478 is about 386.8171321201.

The spelling of 57878478 in words is "fifty-seven million, eight hundred seventy-eight thousand, four hundred seventy-eight".