13072237 has 4 divisors (see below), whose sum is σ = 13175296. Its totient is φ = 12969180.

The previous prime is 13072229. The next prime is 13072253. The reversal of 13072237 is 73227031.

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 13072237 - 2³ = 13072229 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 (13072537) 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, 51339 + ... + 51592.

It is an arithmetic number, because the mean of its divisors is an integer number (3293824).

Almost surely, 2^13072237 is an apocalyptic number.

It is an amenable number.

13072237 is a deficient number, since it is larger than the sum of its proper divisors (103059).

13072237 is a wasteful number, since it uses less digits than its factorization.

13072237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103058.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 13072237 is about 3615.5548675134. The cubic root of 13072237 is about 235.5681860127.

Adding to 13072237 its reverse (73227031), we get a palindrome (86299268).

The spelling of 13072237 in words is "thirteen million, seventy-two thousand, two hundred thirty-seven".