90287408 has 40 divisors (see below), whose sum is σ = 188746848. Its totient is φ = 41679872.

The previous prime is 90287389. The next prime is 90287413. The reversal of 90287408 is 80478209.

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, 11285 + ... + 17547.

Almost surely, 2^90287408 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 90287408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94373424).

90287408 is an abundant number, since it is smaller than the sum of its proper divisors (98459440).

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

90287408 is a wasteful number, since it uses less digits than its factorization.

90287408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6335 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 90287408 is about 9501.9686381297. The cubic root of 90287408 is about 448.6170016813.

The spelling of 90287408 in words is "ninety million, two hundred eighty-seven thousand, four hundred eight".