12644454 has 16 divisors (see below), whose sum is σ = 25972848. Its totient is φ = 4100832.

The previous prime is 12644393. The next prime is 12644459. The reversal of 12644454 is 45444621.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28257 + ... + 28700.

It is an arithmetic number, because the mean of its divisors is an integer number (1623303).

Almost surely, 2^12644454 is an apocalyptic number.

12644454 is an abundant number, since it is smaller than the sum of its proper divisors (13328394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12644454 is a wasteful number, since it uses less digits than its factorization.

12644454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56999.

The product of its digits is 15360, while the sum is 30.

The square root of 12644454 is about 3555.9041044438. The cubic root of 12644454 is about 232.9700146226.

The spelling of 12644454 in words is "twelve million, six hundred forty-four thousand, four hundred fifty-four".