778047252 has 48 divisors (see below), whose sum is σ = 1855332864. Its totient is φ = 253708000.

The previous prime is 778047251. The next prime is 778047301. The reversal of 778047252 is 252740877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778047251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108127 + ... + 115097.

It is an arithmetic number, because the mean of its divisors is an integer number (38652768).

Almost surely, 2^778047252 is an apocalyptic number.

It is an amenable number.

778047252 is an abundant number, since it is smaller than the sum of its proper divisors (1077285612).

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

778047252 is a wasteful number, since it uses less digits than its factorization.

778047252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180 (or 7178 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 778047252 is about 27893.4983822395. The cubic root of 778047252 is about 919.7475882844.

The spelling of 778047252 in words is "seven hundred seventy-eight million, forty-seven thousand, two hundred fifty-two".