12147746 has 16 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 5510928.

The previous prime is 12147743. The next prime is 12147769. The reversal of 12147746 is 64774121.

It is not an unprimeable number, because it can be changed into a prime (12147743) 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, 2426 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^12147746 is an apocalyptic number.

12147746 is a deficient number, since it is larger than the sum of its proper divisors (7810654).

12147746 is a wasteful number, since it uses less digits than its factorization.

12147746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993.

The product of its digits is 9408, while the sum is 32.

The square root of 12147746 is about 3485.3616742025. The cubic root of 12147746 is about 229.8786126952.

The spelling of 12147746 in words is "twelve million, one hundred forty-seven thousand, seven hundred forty-six".