12782198 has 48 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 5026560.

The previous prime is 12782183. The next prime is 12782213. The reversal of 12782198 is 89128721.

It is an interprime number because it is at equal distance from previous prime (12782183) and next prime (12782213).

It is a super-2 number, since 2×12782198² = 326769171422408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 53363 + ... + 53601.

It is an arithmetic number, because the mean of its divisors is an integer number (502740).

Almost surely, 2^12782198 is an apocalyptic number.

12782198 is a deficient number, since it is larger than the sum of its proper divisors (11349322).

12782198 is a wasteful number, since it uses less digits than its factorization.

12782198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 12782198 is about 3575.2199932312. The cubic root of 12782198 is about 233.8129242361.

The spelling of 12782198 in words is "twelve million, seven hundred eighty-two thousand, one hundred ninety-eight".