561992628 has 24 divisors (see below), whose sum is σ = 1341813088. Its totient is φ = 182974176.

The previous prime is 561992597. The next prime is 561992657. The reversal of 561992628 is 826299165.

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 7 ways as a sum of consecutive naturals, for example, 544051 + ... + 545082.

Almost surely, 2^561992628 is an apocalyptic number.

It is an amenable number.

561992628 is an abundant number, since it is smaller than the sum of its proper divisors (779820460).

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

561992628 is a wasteful number, since it uses less digits than its factorization.

561992628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089183 (or 1089181 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 561992628 is about 23706.3836972238. The cubic root of 561992628 is about 825.2335441658.

The spelling of 561992628 in words is "five hundred sixty-one million, nine hundred ninety-two thousand, six hundred twenty-eight".