789780 has 24 divisors (see below), whose sum is σ = 2211552. Its totient is φ = 210592.

The previous prime is 789749. The next prime is 789793. The reversal of 789780 is 87987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6522 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (92148).

2⁷⁸⁹⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

789780 is an abundant number, since it is smaller than the sum of its proper divisors (1421772).

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

789780 is a wasteful number, since it uses less digits than its factorization.

789780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13175 (or 13173 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 789780 is about 888.6956734451. The cubic root of 789780 is about 92.4347726174.

The spelling of 789780 in words is "seven hundred eighty-nine thousand, seven hundred eighty".