878780 has 24 divisors (see below), whose sum is σ = 2109408. Its totient is φ = 301248.

The previous prime is 878777. The next prime is 878783. The reversal of 878780 is 87878.

It is an interprime number because it is at equal distance from previous prime (878777) and next prime (878783).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878783) 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, 2999 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (87892).

2⁸⁷⁸⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

878780 is an abundant number, since it is smaller than the sum of its proper divisors (1230628).

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

878780 is a wasteful number, since it uses less digits than its factorization.

878780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293 (or 6291 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 878780 is about 937.4326642485. The cubic root of 878780 is about 95.7840923257.

The spelling of 878780 in words is "eight hundred seventy-eight thousand, seven hundred eighty".