12816885 has 8 divisors (see below), whose sum is σ = 20507040. Its totient is φ = 6835664.

The previous prime is 12816883. The next prime is 12816889. The reversal of 12816885 is 58861821.

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

It is a cyclic number.

It is not a de Polignac number, because 12816885 - 2¹ = 12816883 is a prime.

It is a super-2 number, since 2×12816885² = 328545082206450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816883) 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, 427215 + ... + 427244.

It is an arithmetic number, because the mean of its divisors is an integer number (2563380).

Almost surely, 2^12816885 is an apocalyptic number.

12816885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12816885 is a deficient number, since it is larger than the sum of its proper divisors (7690155).

12816885 is an equidigital number, since it uses as much as digits as its factorization.

12816885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854467.

The product of its digits is 30720, while the sum is 39.

The square root of 12816885 is about 3580.0677367893. The cubic root of 12816885 is about 234.0242322776.

The spelling of 12816885 in words is "twelve million, eight hundred sixteen thousand, eight hundred eighty-five".