780830 has 16 divisors (see below), whose sum is σ = 1419984. Its totient is φ = 309120.

The previous prime is 780823. The next prime is 780833. The reversal of 780830 is 38087.

It is a self number, because there is not a number n which added to its sum of digits gives 780830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785 + ... + 1475.

It is an arithmetic number, because the mean of its divisors is an integer number (88749).

2⁷⁸⁰⁸³⁰ is an apocalyptic number.

780830 is a deficient number, since it is larger than the sum of its proper divisors (639154).

780830 is a wasteful number, since it uses less digits than its factorization.

780830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811.

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

The square root of 780830 is about 883.6458566643. The cubic root of 780830 is about 92.0842800464.

The spelling of 780830 in words is "seven hundred eighty thousand, eight hundred thirty".