990752078 has 32 divisors (see below), whose sum is σ = 1616060160. Its totient is φ = 453720960.

The previous prime is 990752051. The next prime is 990752089. The reversal of 990752078 is 870257099.

It is a super-2 number, since 2×990752078² = 1963179360122636168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453593 + ... + 455771.

It is an arithmetic number, because the mean of its divisors is an integer number (50501880).

Almost surely, 2^990752078 is an apocalyptic number.

990752078 is a deficient number, since it is larger than the sum of its proper divisors (625308082).

990752078 is a wasteful number, since it uses less digits than its factorization.

990752078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 990752078 is about 31476.2144801436. The cubic root of 990752078 is about 996.9078075346.

The spelling of 990752078 in words is "nine hundred ninety million, seven hundred fifty-two thousand, seventy-eight".