78904850 has 24 divisors (see below), whose sum is σ = 147084708. Its totient is φ = 31492800.

The previous prime is 78904841. The next prime is 78904867. The reversal of 78904850 is 5840987.

It can be written as a sum of positive squares in 6 ways, for example, as 53392249 + 25512601 = 7307^2 + 5051^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78904798 and 78904807.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25592 + ... + 28508.

Almost surely, 2^78904850 is an apocalyptic number.

78904850 is a deficient number, since it is larger than the sum of its proper divisors (68179858).

78904850 is a wasteful number, since it uses less digits than its factorization.

78904850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78904850 is about 8882.8401989454. The cubic root of 78904850 is about 428.9117062095.

The spelling of 78904850 in words is "seventy-eight million, nine hundred four thousand, eight hundred fifty".