90644284 has 18 divisors (see below), whose sum is σ = 160705104. Its totient is φ = 44736120.

The previous prime is 90644273. The next prime is 90644303. The reversal of 90644284 is 48244609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23149 + ... + 26779.

Almost surely, 2^90644284 is an apocalyptic number.

It is an amenable number.

90644284 is a deficient number, since it is larger than the sum of its proper divisors (70060820).

90644284 is a wasteful number, since it uses less digits than its factorization.

90644284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793 (or 3712 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 90644284 is about 9520.7291737555. The cubic root of 90644284 is about 449.2073023856.

The spelling of 90644284 in words is "ninety million, six hundred forty-four thousand, two hundred eighty-four".