12972437 has 8 divisors (see below), whose sum is σ = 13591104. Its totient is φ = 12358368.

The previous prime is 12972371. The next prime is 12972457. The reversal of 12972437 is 73427921.

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

It is a cyclic number.

It is not a de Polignac number, because 12972437 - 2¹⁸ = 12710293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12972397 and 12972406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972457) 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, 5513 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (1698888).

Almost surely, 2^12972437 is an apocalyptic number.

It is an amenable number.

12972437 is a deficient number, since it is larger than the sum of its proper divisors (618667).

12972437 is a wasteful number, since it uses less digits than its factorization.

12972437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its digits is 21168, while the sum is 35.

The square root of 12972437 is about 3601.7269468964. The cubic root of 12972437 is about 234.9671721158.

The spelling of 12972437 in words is "twelve million, nine hundred seventy-two thousand, four hundred thirty-seven".