12785880 has 64 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 3335552.

The previous prime is 12785869. The next prime is 12785933. The reversal of 12785880 is 8858721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4507 + ... + 6773.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^12785880 is an apocalyptic number.

12785880 is a gapful number since it is divisible by the number (10) 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 12785880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19595520).

12785880 is an abundant number, since it is smaller than the sum of its proper divisors (26405160).

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

12785880 is a wasteful number, since it uses less digits than its factorization.

12785880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2324 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 12785880 is about 3575.7348895017. The cubic root of 12785880 is about 233.8353725541.

The spelling of 12785880 in words is "twelve million, seven hundred eighty-five thousand, eight hundred eighty".