561026828 has 6 divisors (see below), whose sum is σ = 981796956. Its totient is φ = 280513412.

The previous prime is 561026801. The next prime is 561026839. The reversal of 561026828 is 828620165.

It is a super-2 number, since 2×561026828² = 629502203471483168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561026791 and 561026800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70128350 + ... + 70128357.

It is an arithmetic number, because the mean of its divisors is an integer number (163632826).

Almost surely, 2^561026828 is an apocalyptic number.

It is an amenable number.

561026828 is a deficient number, since it is larger than the sum of its proper divisors (420770128).

561026828 is a wasteful number, since it uses less digits than its factorization.

561026828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140256711 (or 140256709 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 561026828 is about 23686.0048974072. The cubic root of 561026828 is about 824.7605441565.

The spelling of 561026828 in words is "five hundred sixty-one million, twenty-six thousand, eight hundred twenty-eight".