78956856 has 240 divisors, whose sum is σ = 260706600. Its totient is φ = 22239360.

The previous prime is 78956831. The next prime is 78956863. The reversal of 78956856 is 65865987.

78956856 is a `hidden beast` number, since 78 + 9 + 568 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (3628800) is a multiple of the sum of its prime factors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1489726 + ... + 1489778.

Almost surely, 2^78956856 is an apocalyptic number.

78956856 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78956856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130353300).

78956856 is an abundant number, since it is smaller than the sum of its proper divisors (181749744).

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

78956856 is a wasteful number, since it uses less digits than its factorization.

78956856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 88 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 78956856 is about 8885.7670462375. The cubic root of 78956856 is about 429.0059170782.

The spelling of 78956856 in words is "seventy-eight million, nine hundred fifty-six thousand, eight hundred fifty-six".