990022032 has 30 divisors (see below), whose sum is σ = 2770687062. Its totient is φ = 330007296.

The previous prime is 990022021. The next prime is 990022043. The reversal of 990022032 is 230220099.

It is an interprime number because it is at equal distance from previous prime (990022021) and next prime (990022043).

It can be written as a sum of positive squares in only one way, i.e., 730296576 + 259725456 = 27024^2 + 16116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 990021987 and 990022005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3437433 + ... + 3437720.

Almost surely, 2^990022032 is an apocalyptic number.

It is an amenable number.

990022032 is an abundant number, since it is smaller than the sum of its proper divisors (1780665030).

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

990022032 is a wasteful number, since it uses less digits than its factorization.

990022032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875167 (or 6875158 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 990022032 is about 31464.6155546194. The cubic root of 990022032 is about 996.6628867294.

The spelling of 990022032 in words is "nine hundred ninety million, twenty-two thousand, thirty-two".