990022672 has 40 divisors (see below), whose sum is σ = 2025745344. Its totient is φ = 467769984.

The previous prime is 990022661. The next prime is 990022673. The reversal of 990022672 is 276220099.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (990022673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14338 + ... + 46750.

Almost surely, 2^990022672 is an apocalyptic number.

990022672 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990022672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012872672).

990022672 is an abundant number, since it is smaller than the sum of its proper divisors (1035722672).

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

990022672 is a wasteful number, since it uses less digits than its factorization.

990022672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32527 (or 32521 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 990022672 is about 31464.6257247723. The cubic root of 990022672 is about 996.6631014937.

The spelling of 990022672 in words is "nine hundred ninety million, twenty-two thousand, six hundred seventy-two".