13440232 has 24 divisors (see below), whose sum is σ = 27290790. Its totient is φ = 6202560.

The previous prime is 13440221. The next prime is 13440233. The reversal of 13440232 is 23204431.

It can be written as a sum of positive squares in 3 ways, for example, as 2056356 + 11383876 = 1434^2 + 3374^2 .

It is not an unprimeable number, because it can be changed into a prime (13440233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3619 + ... + 6322.

Almost surely, 2^13440232 is an apocalyptic number.

It is an amenable number.

13440232 is an abundant number, since it is smaller than the sum of its proper divisors (13850558).

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

13440232 is a wasteful number, since it uses less digits than its factorization.

13440232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9973 (or 9956 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13440232 is about 3666.0921974222. The cubic root of 13440232 is about 237.7582461482.

Adding to 13440232 its reverse (23204431), we get a palindrome (36644663).

The spelling of 13440232 in words is "thirteen million, four hundred forty thousand, two hundred thirty-two".