13230724 has 12 divisors (see below), whose sum is σ = 24934924. Its totient is φ = 6106464.

The previous prime is 13230689. The next prime is 13230731. The reversal of 13230724 is 42703231.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 11833600 = 1182^2 + 3440^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13230695 and 13230704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127167 + ... + 127270.

Almost surely, 2^13230724 is an apocalyptic number.

It is an amenable number.

13230724 is a deficient number, since it is larger than the sum of its proper divisors (11704200).

13230724 is a wasteful number, since it uses less digits than its factorization.

13230724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254454 (or 254452 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 13230724 is about 3637.4062187223. The cubic root of 13230724 is about 236.5163691185.

Adding to 13230724 its reverse (42703231), we get a palindrome (55933955).

The spelling of 13230724 in words is "thirteen million, two hundred thirty thousand, seven hundred twenty-four".