774378456 has 16 divisors (see below), whose sum is σ = 1935946200. Its totient is φ = 258126144.

The previous prime is 774378433. The next prime is 774378457. The reversal of 774378456 is 654873477.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 774378399 and 774378408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774378457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16132861 + ... + 16132908.

Almost surely, 2^774378456 is an apocalyptic number.

It is an amenable number.

774378456 is an abundant number, since it is smaller than the sum of its proper divisors (1161567744).

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

774378456 is a wasteful number, since it uses less digits than its factorization.

774378456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32265778 (or 32265774 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 51.

The square root of 774378456 is about 27827.6563152559. The cubic root of 774378456 is about 918.2996539336.

The spelling of 774378456 in words is "seven hundred seventy-four million, three hundred seventy-eight thousand, four hundred fifty-six".