13643296 has 12 divisors (see below), whose sum is σ = 26860302. Its totient is φ = 6821632.

The previous prime is 13643293. The next prime is 13643323. The reversal of 13643296 is 69234631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8643600 + 4999696 = 2940^2 + 2236^2 .

It is a super-2 number, since 2×13643296² = 372279051487232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13643293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213145 + ... + 213208.

Almost surely, 2^13643296 is an apocalyptic number.

13643296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13643296 is a deficient number, since it is larger than the sum of its proper divisors (13217006).

13643296 is an equidigital number, since it uses as much as digits as its factorization.

13643296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426363 (or 426355 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 13643296 is about 3693.6832565882. The cubic root of 13643296 is about 238.9496693209.

The spelling of 13643296 in words is "thirteen million, six hundred forty-three thousand, two hundred ninety-six".