13090247 has 4 divisors (see below), whose sum is σ = 13225296. Its totient is φ = 12955200.

The previous prime is 13090219. The next prime is 13090261. The reversal of 13090247 is 74209031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13090247 - 2¹⁸ = 12828103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13090547) 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, 67379 + ... + 67572.

It is an arithmetic number, because the mean of its divisors is an integer number (3306324).

Almost surely, 2^13090247 is an apocalyptic number.

13090247 is a deficient number, since it is larger than the sum of its proper divisors (135049).

13090247 is an equidigital number, since it uses as much as digits as its factorization.

13090247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135048.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13090247 is about 3618.0446376461. The cubic root of 13090247 is about 235.6763194088.

Adding to 13090247 its reverse (74209031), we get a palindrome (87299278).

It can be divided in two parts, 1309024 and 7, that added together give a palindrome (1309031).

The spelling of 13090247 in words is "thirteen million, ninety thousand, two hundred forty-seven".