78093856 has 24 divisors (see below), whose sum is σ = 153981324. Its totient is φ = 38987520.

The previous prime is 78093853. The next prime is 78093877. The reversal of 78093856 is 65839087.

It can be written as a sum of positive squares in 2 ways, for example, as 73616400 + 4477456 = 8580^2 + 2116^2 .

It is not an unprimeable number, because it can be changed into a prime (78093853) 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, 25866 + ... + 28726.

Almost surely, 2^78093856 is an apocalyptic number.

It is an amenable number.

78093856 is a deficient number, since it is larger than the sum of its proper divisors (75887468).

78093856 is a wasteful number, since it uses less digits than its factorization.

78093856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3716 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 78093856 is about 8837.0728185299. The cubic root of 78093856 is about 427.4371732621.

The spelling of 78093856 in words is "seventy-eight million, ninety-three thousand, eight hundred fifty-six".