12643384 has 16 divisors (see below), whose sum is σ = 25530120. Its totient is φ = 5835360.

The previous prime is 12643373. The next prime is 12643387. The reversal of 12643384 is 48334621.

It is a super-3 number, since 3×12643384³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60682 + ... + 60889.

Almost surely, 2^12643384 is an apocalyptic number.

It is an amenable number.

12643384 is an abundant number, since it is smaller than the sum of its proper divisors (12886736).

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

12643384 is a wasteful number, since it uses less digits than its factorization.

12643384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121590 (or 121586 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 12643384 is about 3555.7536472596. The cubic root of 12643384 is about 232.9634429681.

The spelling of 12643384 in words is "twelve million, six hundred forty-three thousand, three hundred eighty-four".