90508836 has 48 divisors (see below), whose sum is σ = 232243200. Its totient is φ = 27205920.

The previous prime is 90508829. The next prime is 90508849. The reversal of 90508836 is 63880509.

It is a junction number, because it is equal to n+sod(n) for n = 90508794 and 90508803.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14065 + ... + 19463.

It is an arithmetic number, because the mean of its divisors is an integer number (4838400).

Almost surely, 2^90508836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90508836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

90508836 is an abundant number, since it is smaller than the sum of its proper divisors (141734364).

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

90508836 is a wasteful number, since it uses less digits than its factorization.

90508836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544 (or 5542 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 90508836 is about 9513.6131937345. The cubic root of 90508836 is about 448.9834435854.

The spelling of 90508836 in words is "ninety million, five hundred eight thousand, eight hundred thirty-six".