991324048 has 40 divisors (see below), whose sum is σ = 2256480576. Its totient is φ = 415939200.

The previous prime is 991323997. The next prime is 991324067. The reversal of 991324048 is 840423199.

991324048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 991324048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214348 + ... + 218923.

Almost surely, 2^991324048 is an apocalyptic number.

It is an amenable number.

991324048 is an abundant number, since it is smaller than the sum of its proper divisors (1265156528).

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

991324048 is a wasteful number, since it uses less digits than its factorization.

991324048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433303 (or 433297 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 991324048 is about 31485.2989187017. The cubic root of 991324048 is about 997.0996118817.

The spelling of 991324048 in words is "nine hundred ninety-one million, three hundred twenty-four thousand, forty-eight".