12275815 has 8 divisors (see below), whose sum is σ = 14787360. Its totient is φ = 9783072.

The previous prime is 12275779. The next prime is 12275827. The reversal of 12275815 is 51857221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12275815 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 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (1848420).

Almost surely, 2^12275815 is an apocalyptic number.

12275815 is a deficient number, since it is larger than the sum of its proper divisors (2511545).

12275815 is an equidigital number, since it uses as much as digits as its factorization.

12275815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401.

The product of its digits is 5600, while the sum is 31.

The square root of 12275815 is about 3503.6859162887. The cubic root of 12275815 is about 230.6836308019.

The spelling of 12275815 in words is "twelve million, two hundred seventy-five thousand, eight hundred fifteen".