12644834 has 8 divisors (see below), whose sum is σ = 19017180. Its totient is φ = 6305776.

The previous prime is 12644831. The next prime is 12644857. The reversal of 12644834 is 43844621.

It can be written as a sum of positive squares in 2 ways, for example, as 12623809 + 21025 = 3553^2 + 145^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12644834.

It is not an unprimeable number, because it can be changed into a prime (12644831) 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 3 ways as a sum of consecutive naturals, for example, 7349 + ... + 8904.

Almost surely, 2^12644834 is an apocalyptic number.

12644834 is a deficient number, since it is larger than the sum of its proper divisors (6372346).

12644834 is a wasteful number, since it uses less digits than its factorization.

12644834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644.

The product of its digits is 18432, while the sum is 32.

The square root of 12644834 is about 3555.9575363044. The cubic root of 12644834 is about 232.9723483920.

The spelling of 12644834 in words is "twelve million, six hundred forty-four thousand, eight hundred thirty-four".