90724332 has 12 divisors (see below), whose sum is σ = 211690136. Its totient is φ = 30241440.

The previous prime is 90724307. The next prime is 90724343. The reversal of 90724332 is 23342709.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 90724332.

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, 3780169 + ... + 3780192.

Almost surely, 2^90724332 is an apocalyptic number.

It is an amenable number.

90724332 is an abundant number, since it is smaller than the sum of its proper divisors (120965804).

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

90724332 is a wasteful number, since it uses less digits than its factorization.

90724332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560368 (or 7560366 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 90724332 is about 9524.9321257424. The cubic root of 90724332 is about 449.3394951905.

The spelling of 90724332 in words is "ninety million, seven hundred twenty-four thousand, three hundred thirty-two".