778260052 has 6 divisors (see below), whose sum is σ = 1361955098. Its totient is φ = 389130024.

The previous prime is 778260029. The next prime is 778260061. The reversal of 778260052 is 250062877.

778260052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 584382276 + 193877776 = 24174^2 + 13924^2 .

It is a junction number, because it is equal to n+sod(n) for n = 778259993 and 778260020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97282503 + ... + 97282510.

Almost surely, 2^778260052 is an apocalyptic number.

It is an amenable number.

778260052 is a deficient number, since it is larger than the sum of its proper divisors (583695046).

778260052 is a wasteful number, since it uses less digits than its factorization.

778260052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194565017 (or 194565015 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 778260052 is about 27897.3126304309. The cubic root of 778260052 is about 919.8314325691.

The spelling of 778260052 in words is "seven hundred seventy-eight million, two hundred sixty thousand, fifty-two".