12972237 has 8 divisors (see below), whose sum is σ = 17763936. Its totient is φ = 8414352.

The previous prime is 12972233. The next prime is 12972257. The reversal of 12972237 is 73227921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12972237 - 2² = 12972233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12972198 and 12972207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58323 + ... + 58544.

It is an arithmetic number, because the mean of its divisors is an integer number (2220492).

Almost surely, 2^12972237 is an apocalyptic number.

It is an amenable number.

12972237 is a deficient number, since it is larger than the sum of its proper divisors (4791699).

12972237 is a wasteful number, since it uses less digits than its factorization.

12972237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116907.

The product of its digits is 10584, while the sum is 33.

The square root of 12972237 is about 3601.6991823305. The cubic root of 12972237 is about 234.9659645895.

The spelling of 12972237 in words is "twelve million, nine hundred seventy-two thousand, two hundred thirty-seven".