12278245 has 16 divisors (see below), whose sum is σ = 17159040. Its totient is φ = 8259264.

The previous prime is 12278221. The next prime is 12278249. The reversal of 12278245 is 54287221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12278245 - 2¹¹ = 12276197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1455 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (1072440).

Almost surely, 2^12278245 is an apocalyptic number.

It is an amenable number.

12278245 is a deficient number, since it is larger than the sum of its proper divisors (4880795).

12278245 is an equidigital number, since it uses as much as digits as its factorization.

12278245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684.

The product of its digits is 8960, while the sum is 31.

The square root of 12278245 is about 3504.0326767883. The cubic root of 12278245 is about 230.6988510877.

The spelling of 12278245 in words is "twelve million, two hundred seventy-eight thousand, two hundred forty-five".