12880985 has 16 divisors (see below), whose sum is σ = 17626896. Its totient is φ = 8951808.

The previous prime is 12880979. The next prime is 12880997. The reversal of 12880985 is 58908821.

12880985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 64 + 12880921 = 8^2 + 3589^2 .

It is a cyclic number.

It is not a de Polignac number, because 12880985 - 2⁸ = 12880729 is a prime.

It is a Duffinian number.

It is a Curzon 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, 4724 + ... + 6933.

It is an arithmetic number, because the mean of its divisors is an integer number (1101681).

Almost surely, 2^12880985 is an apocalyptic number.

It is an amenable number.

12880985 is a deficient number, since it is larger than the sum of its proper divisors (4745911).

12880985 is a wasteful number, since it uses less digits than its factorization.

12880985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11692.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 12880985 is about 3589.0089161216. The cubic root of 12880985 is about 234.4137188773.

The spelling of 12880985 in words is "twelve million, eight hundred eighty thousand, nine hundred eighty-five".