778013850 has 24 divisors (see below), whose sum is σ = 1929474720. Its totient is φ = 207470320.

The previous prime is 778013813. The next prime is 778013867. The reversal of 778013850 is 58310877.

It is a junction number, because it is equal to n+sod(n) for n = 778013799 and 778013808.

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, 2593230 + ... + 2593529.

It is an arithmetic number, because the mean of its divisors is an integer number (80394780).

Almost surely, 2^778013850 is an apocalyptic number.

778013850 is an abundant number, since it is smaller than the sum of its proper divisors (1151460870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778013850 is a wasteful number, since it uses less digits than its factorization.

778013850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186774 (or 5186769 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 778013850 is about 27892.8996341363. The cubic root of 778013850 is about 919.7344263381.

The spelling of 778013850 in words is "seven hundred seventy-eight million, thirteen thousand, eight hundred fifty".