13239224 has 8 divisors (see below), whose sum is σ = 24823560. Its totient is φ = 6619608.

The previous prime is 13239223. The next prime is 13239251. The reversal of 13239224 is 42293231.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 13239193 and 13239202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827444 + ... + 827459.

It is an arithmetic number, because the mean of its divisors is an integer number (3102945).

Almost surely, 2^13239224 is an apocalyptic number.

It is an amenable number.

13239224 is a deficient number, since it is larger than the sum of its proper divisors (11584336).

13239224 is a wasteful number, since it uses less digits than its factorization.

13239224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654909 (or 1654905 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 13239224 is about 3638.5744461258. The cubic root of 13239224 is about 236.5670077878.

The spelling of 13239224 in words is "thirteen million, two hundred thirty-nine thousand, two hundred twenty-four".