778349222 has 24 divisors (see below), whose sum is σ = 1359220176. Its totient is φ = 333313008.

The previous prime is 778349219. The next prime is 778349237. The reversal of 778349222 is 222943877.

It is a happy number.

778349222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×778349222² = 1211655022776010568, which contains 22 as substring.

It is a congruent number.

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, 167543 + ... + 172125.

It is an arithmetic number, because the mean of its divisors is an integer number (56634174).

Almost surely, 2^778349222 is an apocalyptic number.

778349222 is a deficient number, since it is larger than the sum of its proper divisors (580870954).

778349222 is a wasteful number, since it uses less digits than its factorization.

778349222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332 (or 6325 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 778349222 is about 27898.9107672683. The cubic root of 778349222 is about 919.8665614596.

The spelling of 778349222 in words is "seven hundred seventy-eight million, three hundred forty-nine thousand, two hundred twenty-two".