78864194 has 8 divisors (see below), whose sum is σ = 123439680. Its totient is φ = 37717636.

The previous prime is 78864161. The next prime is 78864221. The reversal of 78864194 is 49146887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78864194² = 12439122190539272, which contains 22 as substring.

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, 857174 + ... + 857265.

It is an arithmetic number, because the mean of its divisors is an integer number (15429960).

Almost surely, 2^78864194 is an apocalyptic number.

78864194 is a deficient number, since it is larger than the sum of its proper divisors (44575486).

78864194 is a wasteful number, since it uses less digits than its factorization.

78864194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714464.

The product of its digits is 387072, while the sum is 47.

The square root of 78864194 is about 8880.5514468416. The cubic root of 78864194 is about 428.8380274679.

The spelling of 78864194 in words is "seventy-eight million, eight hundred sixty-four thousand, one hundred ninety-four".