13440536 has 16 divisors (see below), whose sum is σ = 25242840. Its totient is φ = 6709120.

The previous prime is 13440529. The next prime is 13440547. The reversal of 13440536 is 63504431.

It is a congruent number.

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, 6095 + ... + 8001.

Almost surely, 2^13440536 is an apocalyptic number.

It is an amenable number.

13440536 is a deficient number, since it is larger than the sum of its proper divisors (11802304).

13440536 is a wasteful number, since it uses less digits than its factorization.

13440536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2790 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 13440536 is about 3666.1336582291. The cubic root of 13440536 is about 237.7600387254.

Adding to 13440536 its reverse (63504431), we get a palindrome (76944967).

The spelling of 13440536 in words is "thirteen million, four hundred forty thousand, five hundred thirty-six".