90257808 has 40 divisors (see below), whose sum is σ = 233516800. Its totient is φ = 30040704.

The previous prime is 90257803. The next prime is 90257861. The reversal of 90257808 is 80875209.

It is not an unprimeable number, because it can be changed into a prime (90257803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50433 + ... + 52191.

It is an arithmetic number, because the mean of its divisors is an integer number (5837920).

Almost surely, 2^90257808 is an apocalyptic number.

It is an amenable number.

90257808 is an abundant number, since it is smaller than the sum of its proper divisors (143258992).

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

90257808 is a wasteful number, since it uses less digits than its factorization.

90257808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 90257808 is about 9500.4109384805. The cubic root of 90257808 is about 448.5679711651.

The spelling of 90257808 in words is "ninety million, two hundred fifty-seven thousand, eight hundred eight".