778360452 has 12 divisors (see below), whose sum is σ = 1816174416. Its totient is φ = 259453480.

The previous prime is 778360409. The next prime is 778360459. The reversal of 778360452 is 254063877.

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

It is not an unprimeable number, because it can be changed into a prime (778360459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32431674 + ... + 32431697.

It is an arithmetic number, because the mean of its divisors is an integer number (151347868).

Almost surely, 2^778360452 is an apocalyptic number.

It is an amenable number.

778360452 is an abundant number, since it is smaller than the sum of its proper divisors (1037813964).

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

778360452 is a wasteful number, since it uses less digits than its factorization.

778360452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64863378 (or 64863376 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 778360452 is about 27899.1120288801. The cubic root of 778360452 is about 919.8709853744.

The spelling of 778360452 in words is "seven hundred seventy-eight million, three hundred sixty thousand, four hundred fifty-two".