780328 has 16 divisors (see below), whose sum is σ = 1478880. Its totient is φ = 385968.

The previous prime is 780323. The next prime is 780343. The reversal of 780328 is 823087.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 780296 and 780305.

It is not an unprimeable number, because it can be changed into a prime (780323) by changing a digit.

780328 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351 + ... + 1297.

It is an arithmetic number, because the mean of its divisors is an integer number (92430).

2⁷⁸⁰³²⁸ is an apocalyptic number.

It is an amenable number.

780328 is a deficient number, since it is larger than the sum of its proper divisors (698552).

780328 is a wasteful number, since it uses less digits than its factorization.

780328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 780328 is about 883.3617605489. The cubic root of 780328 is about 92.0645419820.

The spelling of 780328 in words is "seven hundred eighty thousand, three hundred twenty-eight".