13643924 has 12 divisors (see below), whose sum is σ = 27287904. Its totient is φ = 5847384.

The previous prime is 13643921. The next prime is 13643933. The reversal of 13643924 is 42934631.

13643924 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643921) 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, 243614 + ... + 243669.

It is an arithmetic number, because the mean of its divisors is an integer number (2273992).

Almost surely, 2^13643924 is an apocalyptic number.

13643924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13643924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13643924 is a wasteful number, since it uses less digits than its factorization.

13643924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487294 (or 487292 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 13643924 is about 3693.7682656063. The cubic root of 13643924 is about 238.9533355437.

The spelling of 13643924 in words is "thirteen million, six hundred forty-three thousand, nine hundred twenty-four".