90438576 has 40 divisors (see below), whose sum is σ = 243793920. Its totient is φ = 28835136.

The previous prime is 90438529. The next prime is 90438587. The reversal of 90438576 is 67583409.

It is a happy 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, 39856 + ... + 42063.

It is an arithmetic number, because the mean of its divisors is an integer number (6094848).

Almost surely, 2^90438576 is an apocalyptic number.

It is an amenable number.

90438576 is an abundant number, since it is smaller than the sum of its proper divisors (153355344).

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

90438576 is a wasteful number, since it uses less digits than its factorization.

90438576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81953 (or 81947 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 90438576 is about 9509.9198734795. The cubic root of 90438576 is about 448.8672348837.

The spelling of 90438576 in words is "ninety million, four hundred thirty-eight thousand, five hundred seventy-six".