561858028 has 12 divisors (see below), whose sum is σ = 988685152. Its totient is φ = 279376560.

The previous prime is 561858019. The next prime is 561858071. The reversal of 561858028 is 820858165.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 387300 + ... + 388747.

Almost surely, 2^561858028 is an apocalyptic number.

It is an amenable number.

561858028 is a deficient number, since it is larger than the sum of its proper divisors (426827124).

561858028 is a wasteful number, since it uses less digits than its factorization.

561858028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776232 (or 776230 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 43.

The square root of 561858028 is about 23703.5446294431. The cubic root of 561858028 is about 825.1676564071.

The spelling of 561858028 in words is "five hundred sixty-one million, eight hundred fifty-eight thousand, twenty-eight".