780912 has 120 divisors (see below), whose sum is σ = 2611440. Its totient is φ = 215040.

The previous prime is 780889. The next prime is 780917. The reversal of 780912 is 219087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780917) 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 23 ways as a sum of consecutive naturals, for example, 26914 + ... + 26942.

It is an arithmetic number, because the mean of its divisors is an integer number (21762).

2⁷⁸⁰⁹¹² is an apocalyptic number.

780912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305720).

780912 is an abundant number, since it is smaller than the sum of its proper divisors (1830528).

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

780912 is a wasteful number, since it uses less digits than its factorization.

780912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 780912 is about 883.6922541247. The cubic root of 780912 is about 92.0875033885.

Adding to 780912 its reverse (219087), we get a palindrome (999999).

The spelling of 780912 in words is "seven hundred eighty thousand, nine hundred twelve".