12447275 has 12 divisors (see below), whose sum is σ = 15933504. Its totient is φ = 9636000.

The previous prime is 12447269. The next prime is 12447277. The reversal of 12447275 is 57274421.

It is not a de Polignac number, because 12447275 - 2¹⁰ = 12446251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12447277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7256 + ... + 8805.

It is an arithmetic number, because the mean of its divisors is an integer number (1327792).

Almost surely, 2^12447275 is an apocalyptic number.

12447275 is a deficient number, since it is larger than the sum of its proper divisors (3486229).

12447275 is a wasteful number, since it uses less digits than its factorization.

12447275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16102 (or 16097 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 12447275 is about 3528.0695854816. The cubic root of 12447275 is about 231.7526781245.

The spelling of 12447275 in words is "twelve million, four hundred forty-seven thousand, two hundred seventy-five".