778888852 has 24 divisors (see below), whose sum is σ = 1562210496. Its totient is φ = 332859648.

The previous prime is 778888843. The next prime is 778888853. The reversal of 778888852 is 258888877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778888853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29518 + ... + 49285.

It is an arithmetic number, because the mean of its divisors is an integer number (65092104).

Almost surely, 2^778888852 is an apocalyptic number.

It is an amenable number.

778888852 is an abundant number, since it is smaller than the sum of its proper divisors (783321644).

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

778888852 is a wasteful number, since it uses less digits than its factorization.

778888852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79167 (or 79165 counting only the distinct ones).

The product of its digits is 16056320, while the sum is 61.

The square root of 778888852 is about 27908.5802576914. The cubic root of 778888852 is about 920.0790937041.

The spelling of 778888852 in words is "seven hundred seventy-eight million, eight hundred eighty-eight thousand, eight hundred fifty-two".