28469280056 has 16 divisors (see below), whose sum is σ = 61005600240. Its totient is φ = 12201120000.

The previous prime is 28469280043. The next prime is 28469280121. The reversal of 28469280056 is 65008296482.

It is a junction number, because it is equal to n+sod(n) for n = 28469279986 and 28469280013.

It is a congruent number.

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, 254189945 + ... + 254190056.

It is an arithmetic number, because the mean of its divisors is an integer number (3812850015).

Almost surely, 2^28469280056 is an apocalyptic number.

It is an amenable number.

28469280056 is an abundant number, since it is smaller than the sum of its proper divisors (32536320184).

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

28469280056 is a wasteful number, since it uses less digits than its factorization.

28469280056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508380014 (or 508380010 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 28469280056 in words is "twenty-eight billion, four hundred sixty-nine million, two hundred eighty thousand, fifty-six".