13238247 has 12 divisors (see below), whose sum is σ = 19402040. Its totient is φ = 8022960.

The previous prime is 13238233. The next prime is 13238249. The reversal of 13238247 is 74283231.

13238247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13238247 - 2¹⁴ = 13221863 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17872 + ... + 18597.

Almost surely, 2^13238247 is an apocalyptic number.

13238247 is a deficient number, since it is larger than the sum of its proper divisors (6163793).

13238247 is a wasteful number, since it uses less digits than its factorization.

13238247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36494 (or 36483 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 13238247 is about 3638.4401877728. The cubic root of 13238247 is about 236.5611884222.

The spelling of 13238247 in words is "thirteen million, two hundred thirty-eight thousand, two hundred forty-seven".