12800985 has 16 divisors (see below), whose sum is σ = 21143040. Its totient is φ = 6606720.

The previous prime is 12800981. The next prime is 12801013. The reversal of 12800985 is 58900821.

It is a happy number.

It is not a de Polignac number, because 12800985 - 2² = 12800981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12800981) by changing a digit.

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, 13300 + ... + 14229.

It is an arithmetic number, because the mean of its divisors is an integer number (1321440).

Almost surely, 2^12800985 is an apocalyptic number.

12800985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12800985 is a deficient number, since it is larger than the sum of its proper divisors (8342055).

12800985 is a wasteful number, since it uses less digits than its factorization.

12800985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27568.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 12800985 is about 3577.8464192863. The cubic root of 12800985 is about 233.9274192312.

The spelling of 12800985 in words is "twelve million, eight hundred thousand, nine hundred eighty-five".