78816494 has 8 divisors (see below), whose sum is σ = 119844480. Its totient is φ = 38868336.

The previous prime is 78816481. The next prime is 78816523. The reversal of 78816494 is 49461887.

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

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, 269774 + ... + 270065.

It is an arithmetic number, because the mean of its divisors is an integer number (14980560).

Almost surely, 2^78816494 is an apocalyptic number.

78816494 is a deficient number, since it is larger than the sum of its proper divisors (41027986).

78816494 is a wasteful number, since it uses less digits than its factorization.

78816494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539914.

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

The square root of 78816494 is about 8877.8653965917. The cubic root of 78816494 is about 428.7515509638.

The spelling of 78816494 in words is "seventy-eight million, eight hundred sixteen thousand, four hundred ninety-four".