778342452 has 12 divisors (see below), whose sum is σ = 1816132416. Its totient is φ = 259447480.

The previous prime is 778342403. The next prime is 778342507. The reversal of 778342452 is 254243877.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32430924 + ... + 32430947.

It is an arithmetic number, because the mean of its divisors is an integer number (151344368).

Almost surely, 2^778342452 is an apocalyptic number.

It is an amenable number.

778342452 is an abundant number, since it is smaller than the sum of its proper divisors (1037789964).

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

778342452 is a wasteful number, since it uses less digits than its factorization.

778342452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64861878 (or 64861876 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

The square root of 778342452 is about 27898.7894361028. The cubic root of 778342452 is about 919.8638944842.

The spelling of 778342452 in words is "seven hundred seventy-eight million, three hundred forty-two thousand, four hundred fifty-two".