12278163 has 8 divisors (see below), whose sum is σ = 16540048. Its totient is φ = 8100864.

The previous prime is 12278153. The next prime is 12278171. The reversal of 12278163 is 36187221.

12278163 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-12278163 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 12278163.

It is not an unprimeable number, because it can be changed into a prime (12278153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20806 + ... + 21387.

It is an arithmetic number, because the mean of its divisors is an integer number (2067506).

Almost surely, 2^12278163 is an apocalyptic number.

12278163 is a deficient number, since it is larger than the sum of its proper divisors (4261885).

12278163 is an equidigital number, since it uses as much as digits as its factorization.

12278163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42293.

The product of its digits is 4032, while the sum is 30.

The square root of 12278163 is about 3504.0209759646. The cubic root of 12278163 is about 230.6983375141.

The spelling of 12278163 in words is "twelve million, two hundred seventy-eight thousand, one hundred sixty-three".