90188232 has 32 divisors (see below), whose sum is σ = 226171680. Its totient is φ = 29969280.

The previous prime is 90188227. The next prime is 90188257. The reversal of 90188232 is 23288109.

It is a junction number, because it is equal to n+sod(n) for n = 90188193 and 90188202.

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, 2268 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (7067865).

Almost surely, 2^90188232 is an apocalyptic number.

It is an amenable number.

90188232 is an abundant number, since it is smaller than the sum of its proper divisors (135983448).

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

90188232 is a wasteful number, since it uses less digits than its factorization.

90188232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11693 (or 11689 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 90188232 is about 9496.7484961959. The cubic root of 90188232 is about 448.4526807222.

The spelling of 90188232 in words is "ninety million, one hundred eighty-eight thousand, two hundred thirty-two".