12802257 has 36 divisors (see below), whose sum is σ = 21125520. Its totient is φ = 7446816.

The previous prime is 12802243. The next prime is 12802289. The reversal of 12802257 is 75220821.

It is not a de Polignac number, because 12802257 - 2⁶ = 12802193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12802257.

It is not an unprimeable number, because it can be changed into a prime (12802357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28678 + ... + 29120.

It is an arithmetic number, because the mean of its divisors is an integer number (586820).

Almost surely, 2^12802257 is an apocalyptic number.

It is an amenable number.

12802257 is a deficient number, since it is larger than the sum of its proper divisors (8323263).

12802257 is a wasteful number, since it uses less digits than its factorization.

12802257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12802257 is about 3578.0241754354. The cubic root of 12802257 is about 233.9351672241.

The spelling of 12802257 in words is "twelve million, eight hundred two thousand, two hundred fifty-seven".