78628856 has 16 divisors (see below), whose sum is σ = 147823800. Its totient is φ = 39209184.

The previous prime is 78628853. The next prime is 78628867. The reversal of 78628856 is 65882687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78628853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9935 + ... + 15998.

Almost surely, 2^78628856 is an apocalyptic number.

It is an amenable number.

78628856 is a deficient number, since it is larger than the sum of its proper divisors (69194944).

78628856 is a wasteful number, since it uses less digits than its factorization.

78628856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26318 (or 26314 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 78628856 is about 8867.2913564403. The cubic root of 78628856 is about 428.4110384375.

The spelling of 78628856 in words is "seventy-eight million, six hundred twenty-eight thousand, eight hundred fifty-six".