12782233 has 2 divisors, whose sum is σ = 12782234. Its totient is φ = 12782232.

The previous prime is 12782219. The next prime is 12782239. The reversal of 12782233 is 33228721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7884864 + 4897369 = 2808^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 12782233 - 2¹⁷ = 12651161 is a prime.

It is not a weakly prime, because it can be changed into another prime (12782239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6391116 + 6391117.

It is an arithmetic number, because the mean of its divisors is an integer number (6391117).

Almost surely, 2^12782233 is an apocalyptic number.

It is an amenable number.

12782233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12782233 is an equidigital number, since it uses as much as digits as its factorization.

12782233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 12782233 is about 3575.2248880315. The cubic root of 12782233 is about 233.8131376434.

The spelling of 12782233 in words is "twelve million, seven hundred eighty-two thousand, two hundred thirty-three".