12857198 has 16 divisors (see below), whose sum is σ = 19804176. Its totient is φ = 6258240.

The previous prime is 12857147. The next prime is 12857209. The reversal of 12857198 is 89175821.

It is a super-3 number, since 3×12857198³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11588 + ... + 12648.

It is an arithmetic number, because the mean of its divisors is an integer number (1237761).

Almost surely, 2^12857198 is an apocalyptic number.

12857198 is a deficient number, since it is larger than the sum of its proper divisors (6946978).

12857198 is a wasteful number, since it uses less digits than its factorization.

12857198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its digits is 40320, while the sum is 41.

The square root of 12857198 is about 3585.6935172990. The cubic root of 12857198 is about 234.2693346031.

The spelling of 12857198 in words is "twelve million, eight hundred fifty-seven thousand, one hundred ninety-eight".