561907228 has 12 divisors (see below), whose sum is σ = 983953432. Its totient is φ = 280777680.

The previous prime is 561907223. The next prime is 561907243. The reversal of 561907228 is 822709165.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561907223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36663 + ... + 49678.

Almost surely, 2^561907228 is an apocalyptic number.

It is an amenable number.

561907228 is a deficient number, since it is larger than the sum of its proper divisors (422046204).

561907228 is a wasteful number, since it uses less digits than its factorization.

561907228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87972 (or 87970 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 561907228 is about 23704.5824261892. The cubic root of 561907228 is about 825.1917414142.

The spelling of 561907228 in words is "five hundred sixty-one million, nine hundred seven thousand, two hundred twenty-eight".