57078090 has 96 divisors (see below), whose sum is σ = 161740800. Its totient is φ = 13910400.

The previous prime is 57078089. The next prime is 57078113. The reversal of 57078090 is 9087075.

57078090 is a `hidden beast` number, since 570 + 7 + 80 + 9 + 0 = 666.

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, 49015 + ... + 50165.

It is an arithmetic number, because the mean of its divisors is an integer number (1684800).

Almost surely, 2^57078090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57078090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80870400).

57078090 is an abundant number, since it is smaller than the sum of its proper divisors (104662710).

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

57078090 is a wasteful number, since it uses less digits than its factorization.

57078090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 57078090 is about 7555.0043017857. The cubic root of 57078090 is about 385.0257811487.

The spelling of 57078090 in words is "fifty-seven million, seventy-eight thousand, ninety".