90174432 has 24 divisors (see below), whose sum is σ = 236708136. Its totient is φ = 30058112.

The previous prime is 90174407. The next prime is 90174433. The reversal of 90174432 is 23447109.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 90174432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90174433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469563 + ... + 469754.

It is an arithmetic number, because the mean of its divisors is an integer number (9862839).

Almost surely, 2^90174432 is an apocalyptic number.

It is an amenable number.

90174432 is an abundant number, since it is smaller than the sum of its proper divisors (146533704).

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

90174432 is a wasteful number, since it uses less digits than its factorization.

90174432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939330 (or 939322 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 90174432 is about 9496.0219039343. The cubic root of 90174432 is about 448.4298064789.

The spelling of 90174432 in words is "ninety million, one hundred seventy-four thousand, four hundred thirty-two".