13403268 has 18 divisors (see below), whose sum is σ = 33880574. Its totient is φ = 4467744.

The previous prime is 13403267. The next prime is 13403279. The reversal of 13403268 is 86230431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12446784 + 956484 = 3528^2 + 978^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13403267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186121 + ... + 186192.

Almost surely, 2^13403268 is an apocalyptic number.

13403268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13403268 is an abundant number, since it is smaller than the sum of its proper divisors (20477306).

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

13403268 is a wasteful number, since it uses less digits than its factorization.

13403268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372323 (or 372318 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13403268 is about 3661.0473911164. The cubic root of 13403268 is about 237.5400811394.

Adding to 13403268 its reverse (86230431), we get a palindrome (99633699).

The spelling of 13403268 in words is "thirteen million, four hundred three thousand, two hundred sixty-eight".