12920337 has 8 divisors (see below), whose sum is σ = 19141280. Its totient is φ = 8613540.

The previous prime is 12920317. The next prime is 12920377. The reversal of 12920337 is 73302921.

It is not a de Polignac number, because 12920337 - 2¹⁸ = 12658193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 478531 = 12920337 / (1 + 2 + 9 + 2 + 0 + 3 + 3 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12920337.

It is not an unprimeable number, because it can be changed into a prime (12920317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239239 + ... + 239292.

It is an arithmetic number, because the mean of its divisors is an integer number (2392660).

Almost surely, 2^12920337 is an apocalyptic number.

It is an amenable number.

12920337 is a deficient number, since it is larger than the sum of its proper divisors (6220943).

12920337 is an equidigital number, since it uses as much as digits as its factorization.

12920337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478540 (or 478534 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 12920337 is about 3594.4870287706. The cubic root of 12920337 is about 234.6521910819.

The spelling of 12920337 in words is "twelve million, nine hundred twenty thousand, three hundred thirty-seven".