13287237 has 4 divisors (see below), whose sum is σ = 17716320. Its totient is φ = 8858156.

The previous prime is 13287233. The next prime is 13287269. The reversal of 13287237 is 73278231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13287237 - 2² = 13287233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13287198 and 13287207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287233) 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, 2214537 + ... + 2214542.

It is an arithmetic number, because the mean of its divisors is an integer number (4429080).

Almost surely, 2^13287237 is an apocalyptic number.

It is an amenable number.

13287237 is a deficient number, since it is larger than the sum of its proper divisors (4429083).

13287237 is an equidigital number, since it uses as much as digits as its factorization.

13287237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429082.

The product of its digits is 14112, while the sum is 33.

The square root of 13287237 is about 3645.1662513526. The cubic root of 13287237 is about 236.8526385465.

The spelling of 13287237 in words is "thirteen million, two hundred eighty-seven thousand, two hundred thirty-seven".