778435852 has 36 divisors (see below), whose sum is σ = 1462262760. Its totient is φ = 362443392.

The previous prime is 778435849. The next prime is 778435913. The reversal of 778435852 is 258534877.

It is a junction number, because it is equal to n+sod(n) for n = 778435796 and 778435805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80628 + ... + 89764.

It is an arithmetic number, because the mean of its divisors is an integer number (40618410).

Almost surely, 2^778435852 is an apocalyptic number.

It is an amenable number.

778435852 is a deficient number, since it is larger than the sum of its proper divisors (683826908).

778435852 is a wasteful number, since it uses less digits than its factorization.

778435852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238 (or 9217 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The square root of 778435852 is about 27900.4632936444. The cubic root of 778435852 is about 919.9006871373.

The spelling of 778435852 in words is "seven hundred seventy-eight million, four hundred thirty-five thousand, eight hundred fifty-two".