90123232 has 24 divisors (see below), whose sum is σ = 186769800. Its totient is φ = 42689664.

The previous prime is 90123221. The next prime is 90123247. The reversal of 90123232 is 23232109.

It is a super-2 number, since 2×90123232² = 16244393892251648, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 73507 + ... + 74722.

It is an arithmetic number, because the mean of its divisors is an integer number (7782075).

Almost surely, 2^90123232 is an apocalyptic number.

It is an amenable number.

90123232 is an abundant number, since it is smaller than the sum of its proper divisors (96646568).

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

90123232 is a wasteful number, since it uses less digits than its factorization.

90123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148258 (or 148250 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90123232 is about 9493.3256554276. The cubic root of 90123232 is about 448.3449193243.

The spelling of 90123232 in words is "ninety million, one hundred twenty-three thousand, two hundred thirty-two".