778738032 has 30 divisors (see below), whose sum is σ = 2179385312. Its totient is φ = 259579296.

The previous prime is 778738021. The next prime is 778738033. The reversal of 778738032 is 230837877.

778738032 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 not an unprimeable number, because it can be changed into a prime (778738033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2703808 + ... + 2704095.

Almost surely, 2^778738032 is an apocalyptic number.

778738032 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

778738032 is an abundant number, since it is smaller than the sum of its proper divisors (1400647280).

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

778738032 is a wasteful number, since it uses less digits than its factorization.

778738032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5407917 (or 5407908 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 778738032 is about 27905.8780904669. The cubic root of 778738032 is about 920.0197034217.

It can be divided in two parts, 77873 and 8032, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 778738032 in words is "seven hundred seventy-eight million, seven hundred thirty-eight thousand, thirty-two".