778285464 has 128 divisors (see below), whose sum is σ = 2167603200. Its totient is φ = 230912640.

The previous prime is 778285451. The next prime is 778285471. The reversal of 778285464 is 464582877.

778285464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4660309 + ... + 4660475.

It is an arithmetic number, because the mean of its divisors is an integer number (16934400).

Almost surely, 2^778285464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 778285464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083801600).

778285464 is an abundant number, since it is smaller than the sum of its proper divisors (1389317736).

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

778285464 is a wasteful number, since it uses less digits than its factorization.

778285464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 449 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 51.

The square root of 778285464 is about 27897.7680827696. The cubic root of 778285464 is about 919.8414440050.

The spelling of 778285464 in words is "seven hundred seventy-eight million, two hundred eighty-five thousand, four hundred sixty-four".