13440234 has 48 divisors (see below), whose sum is σ = 29884608. Its totient is φ = 4021248.

The previous prime is 13440233. The next prime is 13440241. The reversal of 13440234 is 43204431.

13440234 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13440234.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39714 + ... + 40050.

It is an arithmetic number, because the mean of its divisors is an integer number (622596).

Almost surely, 2^13440234 is an apocalyptic number.

13440234 is an abundant number, since it is smaller than the sum of its proper divisors (16444374).

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

13440234 is a wasteful number, since it uses less digits than its factorization.

13440234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13440234 is about 3666.0924701922. The cubic root of 13440234 is about 237.7582579415.

Adding to 13440234 its reverse (43204431), we get a palindrome (56644665).

The spelling of 13440234 in words is "thirteen million, four hundred forty thousand, two hundred thirty-four".