778016934 has 64 divisors (see below), whose sum is σ = 1852865280. Its totient is φ = 241119360.

The previous prime is 778016927. The next prime is 778016947. The reversal of 778016934 is 439610877.

It is a self number, because there is not a number n which added to its sum of digits gives 778016934.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 71089 + ... + 81299.

It is an arithmetic number, because the mean of its divisors is an integer number (28951020).

Almost surely, 2^778016934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 778016934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926432640).

778016934 is an abundant number, since it is smaller than the sum of its proper divisors (1074848346).

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

778016934 is a wasteful number, since it uses less digits than its factorization.

778016934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322 (or 10316 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 778016934 is about 27892.9549169678. The cubic root of 778016934 is about 919.7356415938.

The spelling of 778016934 in words is "seven hundred seventy-eight million, sixteen thousand, nine hundred thirty-four".