78891196 has 12 divisors (see below), whose sum is σ = 144062352. Its totient is φ = 37730528.

The previous prime is 78891193. The next prime is 78891209. The reversal of 78891196 is 69119887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78891191) 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, 428665 + ... + 428848.

It is an arithmetic number, because the mean of its divisors is an integer number (12005196).

Almost surely, 2^78891196 is an apocalyptic number.

It is an amenable number.

78891196 is a deficient number, since it is larger than the sum of its proper divisors (65171156).

78891196 is a wasteful number, since it uses less digits than its factorization.

78891196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857540 (or 857538 counting only the distinct ones).

The product of its digits is 217728, while the sum is 49.

The square root of 78891196 is about 8882.0716052056. The cubic root of 78891196 is about 428.8869646029.

The spelling of 78891196 in words is "seventy-eight million, eight hundred ninety-one thousand, one hundred ninety-six".