12981885 has 16 divisors (see below), whose sum is σ = 23738496. Its totient is φ = 5934528.

The previous prime is 12981869. The next prime is 12981893. The reversal of 12981885 is 58818921.

It is not a de Polignac number, because 12981885 - 2⁴ = 12981869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61714 + ... + 61923.

It is an arithmetic number, because the mean of its divisors is an integer number (1483656).

Almost surely, 2^12981885 is an apocalyptic number.

12981885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12981885 is a deficient number, since it is larger than the sum of its proper divisors (10756611).

12981885 is a wasteful number, since it uses less digits than its factorization.

12981885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123652.

The product of its digits is 46080, while the sum is 42.

The square root of 12981885 is about 3603.0383012119. The cubic root of 12981885 is about 235.0242015214.

The spelling of 12981885 in words is "twelve million, nine hundred eighty-one thousand, eight hundred eighty-five".