12644830 has 32 divisors (see below), whose sum is σ = 25038720. Its totient is φ = 4559520.

The previous prime is 12644809. The next prime is 12644831. The reversal of 12644830 is 3844621.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14877 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (782460).

Almost surely, 2^12644830 is an apocalyptic number.

12644830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12644830 is a deficient number, since it is larger than the sum of its proper divisors (12393890).

12644830 is a wasteful number, since it uses less digits than its factorization.

12644830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 12644830 is about 3555.9569738679. The cubic root of 12644830 is about 232.9723238262.

The spelling of 12644830 in words is "twelve million, six hundred forty-four thousand, eight hundred thirty".