780380 has 12 divisors (see below), whose sum is σ = 1638840. Its totient is φ = 312144.

The previous prime is 780379. The next prime is 780383. The reversal of 780380 is 83087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780383) 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 3 ways as a sum of consecutive naturals, for example, 19490 + ... + 19529.

It is an arithmetic number, because the mean of its divisors is an integer number (136570).

2⁷⁸⁰³⁸⁰ is an apocalyptic number.

It is an amenable number.

780380 is an abundant number, since it is smaller than the sum of its proper divisors (858460).

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

780380 is a wasteful number, since it uses less digits than its factorization.

780380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39028 (or 39026 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 780380 is about 883.3911930736. The cubic root of 780380 is about 92.0665869553.

The spelling of 780380 in words is "seven hundred eighty thousand, three hundred eighty".