12136885 has 8 divisors (see below), whose sum is σ = 14657976. Its totient is φ = 9647040.

The previous prime is 12136853. The next prime is 12136889. The reversal of 12136885 is 58863121.

It can be written as a sum of positive squares in 4 ways, for example, as 40401 + 12096484 = 201^2 + 3478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12136885 - 2⁵ = 12136853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12136885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136889) 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 7 ways as a sum of consecutive naturals, for example, 6946 + ... + 8515.

It is an arithmetic number, because the mean of its divisors is an integer number (1832247).

Almost surely, 2^12136885 is an apocalyptic number.

It is an amenable number.

12136885 is a deficient number, since it is larger than the sum of its proper divisors (2521091).

12136885 is a wasteful number, since it uses less digits than its factorization.

12136885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15623.

The product of its digits is 11520, while the sum is 34.

The square root of 12136885 is about 3483.8032378422. The cubic root of 12136885 is about 229.8100826687.

The spelling of 12136885 in words is "twelve million, one hundred thirty-six thousand, eight hundred eighty-five".