90815058 has 24 divisors (see below), whose sum is σ = 203114496. Its totient is φ = 29295000.

The previous prime is 90815009. The next prime is 90815069. The reversal of 90815058 is 85051809.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80818 + ... + 81933.

It is an arithmetic number, because the mean of its divisors is an integer number (8463104).

Almost surely, 2^90815058 is an apocalyptic number.

90815058 is an abundant number, since it is smaller than the sum of its proper divisors (112299438).

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

90815058 is a wasteful number, since it uses less digits than its factorization.

90815058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162790 (or 162787 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 90815058 is about 9529.6934892996. The cubic root of 90815058 is about 449.4892278753.

The spelling of 90815058 in words is "ninety million, eight hundred fifteen thousand, fifty-eight".