990755872 has 24 divisors (see below), whose sum is σ = 1957609836. Its totient is φ = 493585152.

The previous prime is 990755851. The next prime is 990755897. The reversal of 990755872 is 278557099.

It can be written as a sum of positive squares in 2 ways, for example, as 875923216 + 114832656 = 29596^2 + 10716^2 .

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, 47023 + ... + 64750.

Almost surely, 2^990755872 is an apocalyptic number.

It is an amenable number.

990755872 is a deficient number, since it is larger than the sum of its proper divisors (966853964).

990755872 is a wasteful number, since it uses less digits than its factorization.

990755872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112060 (or 112052 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 52.

The square root of 990755872 is about 31476.2747478160. The cubic root of 990755872 is about 996.9090800572.

The spelling of 990755872 in words is "nine hundred ninety million, seven hundred fifty-five thousand, eight hundred seventy-two".