13824243 has 8 divisors (see below), whose sum is σ = 20480400. Its totient is φ = 9216144.

The previous prime is 13824241. The next prime is 13824263. The reversal of 13824243 is 34242831.

It is not a de Polignac number, because 13824243 - 2¹ = 13824241 is a prime.

It is a super-2 number, since 2×13824243² = 382219389046098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 512009 = 13824243 / (1 + 3 + 8 + 2 + 4 + 2 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (13824241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255978 + ... + 256031.

It is an arithmetic number, because the mean of its divisors is an integer number (2560050).

Almost surely, 2^13824243 is an apocalyptic number.

13824243 is a deficient number, since it is larger than the sum of its proper divisors (6656157).

13824243 is an equidigital number, since it uses as much as digits as its factorization.

13824243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512018 (or 512012 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 13824243 is about 3718.0966905125. The cubic root of 13824243 is about 240.0014062418.

It can be divided in two parts, 1382 and 4243, that added together give a square (5625 = 75²).

The spelling of 13824243 in words is "thirteen million, eight hundred twenty-four thousand, two hundred forty-three".