13422237 has 4 divisors (see below), whose sum is σ = 17896320. Its totient is φ = 8948156.

The previous prime is 13422229. The next prime is 13422247. The reversal of 13422237 is 73222431.

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 13422237 - 2³ = 13422229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13422247) 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, 2237037 + ... + 2237042.

It is an arithmetic number, because the mean of its divisors is an integer number (4474080).

Almost surely, 2^13422237 is an apocalyptic number.

It is an amenable number.

13422237 is a deficient number, since it is larger than the sum of its proper divisors (4474083).

13422237 is an equidigital number, since it uses as much as digits as its factorization.

13422237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474082.

The product of its digits is 2016, while the sum is 24.

The square root of 13422237 is about 3663.6371272275. The cubic root of 13422237 is about 237.6520879974.

Adding to 13422237 its reverse (73222431), we get a palindrome (86644668).

The spelling of 13422237 in words is "thirteen million, four hundred twenty-two thousand, two hundred thirty-seven".