780378 has 16 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 257600.

The previous prime is 780371. The next prime is 780379. The reversal of 780378 is 873087.

It is not an unprimeable number, because it can be changed into a prime (780371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (98496).

2⁷⁸⁰³⁷⁸ is an apocalyptic number.

780378 is an abundant number, since it is smaller than the sum of its proper divisors (795558).

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

780378 is a wasteful number, since it uses less digits than its factorization.

780378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 780378 is about 883.3900610716. The cubic root of 780378 is about 92.0665083042.

The spelling of 780378 in words is "seven hundred eighty thousand, three hundred seventy-eight".