90904122 has 24 divisors (see below), whose sum is σ = 198173664. Its totient is φ = 30114504.

The previous prime is 90904111. The next prime is 90904139. The reversal of 90904122 is 22140909.

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, 12558 + ... + 18425.

It is an arithmetic number, because the mean of its divisors is an integer number (8257236).

Almost surely, 2^90904122 is an apocalyptic number.

90904122 is an abundant number, since it is smaller than the sum of its proper divisors (107269542).

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

90904122 is a wasteful number, since it uses less digits than its factorization.

90904122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31154 (or 31151 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 90904122 is about 9534.3653171042. The cubic root of 90904122 is about 449.6361206537.

The spelling of 90904122 in words is "ninety million, nine hundred four thousand, one hundred twenty-two".