13640132 has 24 divisors (see below), whose sum is σ = 26225472. Its totient is φ = 6156000.

The previous prime is 13640129. The next prime is 13640141. The reversal of 13640132 is 23104631.

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, 5618 + ... + 7670.

It is an arithmetic number, because the mean of its divisors is an integer number (1092728).

Almost surely, 2^13640132 is an apocalyptic number.

It is an amenable number.

13640132 is a deficient number, since it is larger than the sum of its proper divisors (12585340).

13640132 is a wasteful number, since it uses less digits than its factorization.

13640132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13640132 is about 3693.2549329826. The cubic root of 13640132 is about 238.9311963848.

Adding to 13640132 its reverse (23104631), we get a palindrome (36744763).

The spelling of 13640132 in words is "thirteen million, six hundred forty thousand, one hundred thirty-two".