13943424 has 64 divisors (see below), whose sum is σ = 40416480. Its totient is φ = 4224000.

The previous prime is 13943393. The next prime is 13943429. The reversal of 13943424 is 42434931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 13943391 and 13943400.

It is not an unprimeable number, because it can be changed into a prime (13943429) 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, 2574 + ... + 5874.

Almost surely, 2^13943424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13943424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20208240).

13943424 is an abundant number, since it is smaller than the sum of its proper divisors (26473056).

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

13943424 is a wasteful number, since it uses less digits than its factorization.

13943424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329 (or 3317 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 13943424 is about 3734.0894472415. The cubic root of 13943424 is about 240.6891304639.

The spelling of 13943424 in words is "thirteen million, nine hundred forty-three thousand, four hundred twenty-four".