780770328 has 64 divisors (see below), whose sum is σ = 2193488640. Its totient is φ = 229789824.

The previous prime is 780770323. The next prime is 780770381. The reversal of 780770328 is 823077087.

It is a self number, because there is not a number n which added to its sum of digits gives 780770328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780770323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47226 + ... + 61577.

It is an arithmetic number, because the mean of its divisors is an integer number (34273260).

Almost surely, 2^780770328 is an apocalyptic number.

780770328 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

780770328 is an abundant number, since it is smaller than the sum of its proper divisors (1412718312).

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

780770328 is a wasteful number, since it uses less digits than its factorization.

780770328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108848 (or 108844 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 780770328 is about 27942.2677676670. The cubic root of 780770328 is about 920.8193425491.

The spelling of 780770328 in words is "seven hundred eighty million, seven hundred seventy thousand, three hundred twenty-eight".