12802291 has 4 divisors (see below), whose sum is σ = 13114584. Its totient is φ = 12490000.

The previous prime is 12802289. The next prime is 12802313. The reversal of 12802291 is 19220821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19220821 = 53 ⋅362657.

It is a cyclic number.

It is not a de Polignac number, because 12802291 - 2¹ = 12802289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12802201) 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 3 ways as a sum of consecutive naturals, for example, 156085 + ... + 156166.

It is an arithmetic number, because the mean of its divisors is an integer number (3278646).

Almost surely, 2^12802291 is an apocalyptic number.

12802291 is a deficient number, since it is larger than the sum of its proper divisors (312293).

12802291 is an equidigital number, since it uses as much as digits as its factorization.

12802291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312292.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12802291 is about 3578.0289266578. The cubic root of 12802291 is about 233.9353743175.

The spelling of 12802291 in words is "twelve million, eight hundred two thousand, two hundred ninety-one".