78186896 has 20 divisors (see below), whose sum is σ = 151633152. Its totient is φ = 39055776.

The previous prime is 78186863. The next prime is 78186967. The reversal of 78186896 is 69868187.

It is a super-2 number, since 2×78186896² = 12226381412229632, which contains 22 as substring.

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, 23105 + ... + 26271.

Almost surely, 2^78186896 is an apocalyptic number.

It is an amenable number.

78186896 is a deficient number, since it is larger than the sum of its proper divisors (73446256).

78186896 is a wasteful number, since it uses less digits than its factorization.

78186896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718 (or 4712 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 78186896 is about 8842.3354381068. The cubic root of 78186896 is about 427.6068535834.

The spelling of 78186896 in words is "seventy-eight million, one hundred eighty-six thousand, eight hundred ninety-six".