12195898 has 16 divisors (see below), whose sum is σ = 21492576. Its totient is φ = 5117040.

The previous prime is 12195881. The next prime is 12195947. The reversal of 12195898 is 89859121.

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 7 ways as a sum of consecutive naturals, for example, 21036 + ... + 21607.

It is an arithmetic number, because the mean of its divisors is an integer number (1343286).

Almost surely, 2^12195898 is an apocalyptic number.

12195898 is a deficient number, since it is larger than the sum of its proper divisors (9296678).

12195898 is a wasteful number, since it uses less digits than its factorization.

12195898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42669.

The product of its digits is 51840, while the sum is 43.

The square root of 12195898 is about 3492.2625903560. The cubic root of 12195898 is about 230.1819480244.

It can be divided in two parts, 1219 and 5898, that added together give a palindrome (7117).

The spelling of 12195898 in words is "twelve million, one hundred ninety-five thousand, eight hundred ninety-eight".