990732 has 12 divisors (see below), whose sum is σ = 2311736. Its totient is φ = 330240.

The previous prime is 990719. The next prime is 990733. The reversal of 990732 is 237099.

990732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 990732.

It is not an unprimeable number, because it can be changed into a prime (990733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41269 + ... + 41292.

2⁹⁹⁰⁷³² is an apocalyptic number.

It is an amenable number.

990732 is an abundant number, since it is smaller than the sum of its proper divisors (1321004).

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

990732 is a wasteful number, since it uses less digits than its factorization.

990732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82568 (or 82566 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 990732 is about 995.3552129768. The cubic root of 990732 is about 99.6901073240.

The spelling of 990732 in words is "nine hundred ninety thousand, seven hundred thirty-two".