13628243 has 4 divisors (see below), whose sum is σ = 13735680. Its totient is φ = 13520808.

The previous prime is 13628227. The next prime is 13628257. The reversal of 13628243 is 34282631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34282631 = 19 ⋅1804349.

It is a cyclic number.

It is not a de Polignac number, because 13628243 - 2⁴ = 13628227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13628273) 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, 53528 + ... + 53781.

It is an arithmetic number, because the mean of its divisors is an integer number (3433920).

Almost surely, 2^13628243 is an apocalyptic number.

13628243 is a deficient number, since it is larger than the sum of its proper divisors (107437).

13628243 is a wasteful number, since it uses less digits than its factorization.

13628243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107436.

The product of its digits is 6912, while the sum is 29.

The square root of 13628243 is about 3691.6450262722. The cubic root of 13628243 is about 238.8617572055.

The spelling of 13628243 in words is "thirteen million, six hundred twenty-eight thousand, two hundred forty-three".