90389232 has 60 divisors (see below), whose sum is σ = 266286280. Its totient is φ = 28543104.

The previous prime is 90389203. The next prime is 90389269. The reversal of 90389232 is 23298309.

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, 13783 + ... + 19254.

Almost surely, 2^90389232 is an apocalyptic number.

It is an amenable number.

90389232 is an abundant number, since it is smaller than the sum of its proper divisors (175897048).

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

90389232 is a wasteful number, since it uses less digits than its factorization.

90389232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33070 (or 33061 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 90389232 is about 9507.3251758841. The cubic root of 90389232 is about 448.7855848650.

The spelling of 90389232 in words is "ninety million, three hundred eighty-nine thousand, two hundred thirty-two".