12647444 has 12 divisors (see below), whose sum is σ = 22174068. Its totient is φ = 6312000.

The previous prime is 12647419. The next prime is 12647477. The reversal of 12647444 is 44474621.

It can be written as a sum of positive squares in 2 ways, for example, as 10048900 + 2598544 = 3170^2 + 1612^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12647444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (1847839).

Almost surely, 2^12647444 is an apocalyptic number.

It is an amenable number.

12647444 is a deficient number, since it is larger than the sum of its proper divisors (9526624).

12647444 is a wasteful number, since it uses less digits than its factorization.

12647444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866 (or 5864 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 12647444 is about 3556.3245071281. The cubic root of 12647444 is about 232.9883764394.

The spelling of 12647444 in words is "twelve million, six hundred forty-seven thousand, four hundred forty-four".