78944856 has 16 divisors (see below), whose sum is σ = 197362200. Its totient is φ = 26314944.

The previous prime is 78944849. The next prime is 78944863. The reversal of 78944856 is 65844987.

It is an interprime number because it is at equal distance from previous prime (78944849) and next prime (78944863).

It is a junction number, because it is equal to n+sod(n) for n = 78944799 and 78944808.

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, 1644661 + ... + 1644708.

Almost surely, 2^78944856 is an apocalyptic number.

It is an amenable number.

78944856 is an abundant number, since it is smaller than the sum of its proper divisors (118417344).

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

78944856 is a wasteful number, since it uses less digits than its factorization.

78944856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289378 (or 3289374 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 78944856 is about 8885.0917834314. The cubic root of 78944856 is about 428.9841822891.

It can be divided in two parts, 78944 and 856, that added together give a triangular number (79800 = T₃₉₉).

The spelling of 78944856 in words is "seventy-eight million, nine hundred forty-four thousand, eight hundred fifty-six".