992722628 has 12 divisors (see below), whose sum is σ = 1752639420. Its totient is φ = 491968512.

The previous prime is 992722609. The next prime is 992722651. The reversal of 992722628 is 826227299.

It can be written as a sum of positive squares in 2 ways, for example, as 158206084 + 834516544 = 12578^2 + 28888^2 .

It is a super-2 number, since 2×992722628² = 1970996432286452768, which contains 22 as substring.

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, 1097693 + ... + 1098596.

It is an arithmetic number, because the mean of its divisors is an integer number (146053285).

Almost surely, 2^992722628 is an apocalyptic number.

It is an amenable number.

992722628 is a deficient number, since it is larger than the sum of its proper divisors (759916792).

992722628 is a wasteful number, since it uses less digits than its factorization.

992722628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196406 (or 2196404 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 992722628 is about 31507.5011386178. The cubic root of 992722628 is about 997.5683009662.

The spelling of 992722628 in words is "nine hundred ninety-two million, seven hundred twenty-two thousand, six hundred twenty-eight".