57806490 has 32 divisors (see below), whose sum is σ = 158555520. Its totient is φ = 13212864.

The previous prime is 57806459. The next prime is 57806509. The reversal of 57806490 is 9460875.

57806490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57806490² = 6683180572240200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 137425 + ... + 137844.

It is an arithmetic number, because the mean of its divisors is an integer number (4954860).

Almost surely, 2^57806490 is an apocalyptic number.

57806490 is an abundant number, since it is smaller than the sum of its proper divisors (100749030).

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

57806490 is a wasteful number, since it uses less digits than its factorization.

57806490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275286.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 57806490 is about 7603.0579374354. The cubic root of 57806490 is about 386.6566939891.

The spelling of 57806490 in words is "fifty-seven million, eight hundred six thousand, four hundred ninety".