13640296 has 16 divisors (see below), whose sum is σ = 25627140. Its totient is φ = 6806400.

The previous prime is 13640287. The next prime is 13640299. The reversal of 13640296 is 69204631.

It can be written as a sum of positive squares in 2 ways, for example, as 13468900 + 171396 = 3670^2 + 414^2 .

It is not an unprimeable number, because it can be changed into a prime (13640299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390 + ... + 6226.

Almost surely, 2^13640296 is an apocalyptic number.

It is an amenable number.

13640296 is a deficient number, since it is larger than the sum of its proper divisors (11986844).

13640296 is a wasteful number, since it uses less digits than its factorization.

13640296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 13640296 is about 3693.2771355532. The cubic root of 13640296 is about 238.9321539650.

The spelling of 13640296 in words is "thirteen million, six hundred forty thousand, two hundred ninety-six".