90090356 has 24 divisors (see below), whose sum is σ = 170190720. Its totient is φ = 41599712.

The previous prime is 90090349. The next prime is 90090367. The reversal of 90090356 is 65309009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14216 + ... + 19551.

It is an arithmetic number, because the mean of its divisors is an integer number (7091280).

Almost surely, 2^90090356 is an apocalyptic number.

It is an amenable number.

90090356 is a deficient number, since it is larger than the sum of its proper divisors (80100364).

90090356 is a wasteful number, since it uses less digits than its factorization.

90090356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33823 (or 33821 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 90090356 is about 9491.5939651884. The cubic root of 90090356 is about 448.2903955353.

The spelling of 90090356 in words is "ninety million, ninety thousand, three hundred fifty-six".