28078580456 has 16 divisors (see below), whose sum is σ = 55418251200. Its totient is φ = 13300380144.

The previous prime is 28078580441. The next prime is 28078580459. The reversal of 28078580456 is 65408587082.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28078580398 and 28078580407.

It is not an unprimeable number, because it can be changed into a prime (28078580459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92363600 + ... + 92363903.

It is an arithmetic number, because the mean of its divisors is an integer number (3463640700).

Almost surely, 2^28078580456 is an apocalyptic number.

It is an amenable number.

28078580456 is a deficient number, since it is larger than the sum of its proper divisors (27339670744).

28078580456 is a wasteful number, since it uses less digits than its factorization.

28078580456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184727528 (or 184727524 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 28078580456 in words is "twenty-eight billion, seventy-eight million, five hundred eighty thousand, four hundred fifty-six".