12912285 has 8 divisors (see below), whose sum is σ = 20659680. Its totient is φ = 6886544.

The previous prime is 12912283. The next prime is 12912287. The reversal of 12912285 is 58221921.

It is an interprime number because it is at equal distance from previous prime (12912283) and next prime (12912287).

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 12912285 - 2¹ = 12912283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12912281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430395 + ... + 430424.

It is an arithmetic number, because the mean of its divisors is an integer number (2582460).

Almost surely, 2^12912285 is an apocalyptic number.

12912285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12912285 is a deficient number, since it is larger than the sum of its proper divisors (7747395).

12912285 is an equidigital number, since it uses as much as digits as its factorization.

12912285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860827.

The product of its digits is 2880, while the sum is 30.

The square root of 12912285 is about 3593.3668056573. The cubic root of 12912285 is about 234.6034355921.

The spelling of 12912285 in words is "twelve million, nine hundred twelve thousand, two hundred eighty-five".