991652432 has 20 divisors (see below), whose sum is σ = 2034346356. Its totient is φ = 466659840.

The previous prime is 991652393. The next prime is 991652447. The reversal of 991652432 is 234256199.

991652432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 863419456 + 128232976 = 29384^2 + 11324^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 991652432.

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, 1822619 + ... + 1823162.

Almost surely, 2^991652432 is an apocalyptic number.

It is an amenable number.

991652432 is an abundant number, since it is smaller than the sum of its proper divisors (1042693924).

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

991652432 is a wasteful number, since it uses less digits than its factorization.

991652432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645806 (or 3645800 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 991652432 is about 31490.5133651390. The cubic root of 991652432 is about 997.2096987941.

The spelling of 991652432 in words is "nine hundred ninety-one million, six hundred fifty-two thousand, four hundred thirty-two".