561426208 has 24 divisors (see below), whose sum is σ = 1263209472. Its totient is φ = 240611136.

The previous prime is 561426169. The next prime is 561426223. The reversal of 561426208 is 802624165.

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, 1252960 + ... + 1253407.

It is an arithmetic number, because the mean of its divisors is an integer number (52633728).

Almost surely, 2^561426208 is an apocalyptic number.

It is an amenable number.

561426208 is an abundant number, since it is smaller than the sum of its proper divisors (701783264).

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

561426208 is a wasteful number, since it uses less digits than its factorization.

561426208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506384 (or 2506376 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 561426208 is about 23694.4341143653. The cubic root of 561426208 is about 824.9562060622.

The spelling of 561426208 in words is "five hundred sixty-one million, four hundred twenty-six thousand, two hundred eight".