90549432 has 48 divisors (see below), whose sum is σ = 245854440. Its totient is φ = 30107328.

The previous prime is 90549391. The next prime is 90549451. The reversal of 90549432 is 23494509.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32278 + ... + 34970.

Almost surely, 2^90549432 is an apocalyptic number.

It is an amenable number.

90549432 is an abundant number, since it is smaller than the sum of its proper divisors (155305008).

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

90549432 is a wasteful number, since it uses less digits than its factorization.

90549432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172 (or 3165 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 90549432 is about 9515.7465287806. The cubic root of 90549432 is about 449.0505611850.

The spelling of 90549432 in words is "ninety million, five hundred forty-nine thousand, four hundred thirty-two".