28078560456 has 32 divisors (see below), whose sum is σ = 70219094400. Its totient is φ = 9356494400.

The previous prime is 28078560451. The next prime is 28078560479. The reversal of 28078560456 is 65406587082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28078560399 and 28078560408.

It is not an unprimeable number, because it can be changed into a prime (28078560451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112695 + ... + 262406.

It is an arithmetic number, because the mean of its divisors is an integer number (2194346700).

Almost surely, 2^28078560456 is an apocalyptic number.

It is an amenable number.

28078560456 is an abundant number, since it is smaller than the sum of its proper divisors (42140533944).

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

28078560456 is a wasteful number, since it uses less digits than its factorization.

28078560456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378229 (or 378225 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 28078560456 in words is "twenty-eight billion, seventy-eight million, five hundred sixty thousand, four hundred fifty-six".