13224040 has 32 divisors (see below), whose sum is σ = 29889000. Its totient is φ = 5265664.

The previous prime is 13224037. The next prime is 13224077. The reversal of 13224040 is 4042231.

It can be written as a sum of positive squares in 4 ways, for example, as 11303044 + 1920996 = 3362^2 + 1386^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10146 + ... + 11374.

Almost surely, 2^13224040 is an apocalyptic number.

13224040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13224040 is an abundant number, since it is smaller than the sum of its proper divisors (16664960).

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

13224040 is a wasteful number, since it uses less digits than its factorization.

13224040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13224040 is about 3636.4873160785. The cubic root of 13224040 is about 236.4765340170.

Adding to 13224040 its reverse (4042231), we get a palindrome (17266271).

The spelling of 13224040 in words is "thirteen million, two hundred twenty-four thousand, forty".