996928820 has 24 divisors (see below), whose sum is σ = 2094293544. Its totient is φ = 398630016.

The previous prime is 996928789. The next prime is 996928837. The reversal of 996928820 is 28829699.

It can be written as a sum of positive squares in 4 ways, for example, as 532871056 + 464057764 = 23084^2 + 21542^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63254 + ... + 77426.

It is an arithmetic number, because the mean of its divisors is an integer number (87262231).

Almost surely, 2^996928820 is an apocalyptic number.

It is an amenable number.

996928820 is an abundant number, since it is smaller than the sum of its proper divisors (1097364724).

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

996928820 is a wasteful number, since it uses less digits than its factorization.

996928820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17699 (or 17697 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 996928820 is about 31574.1796409661. The cubic root of 996928820 is about 998.9752235252.

The spelling of 996928820 in words is "nine hundred ninety-six million, nine hundred twenty-eight thousand, eight hundred twenty".