12195534 has 16 divisors (see below), whose sum is σ = 26267472. Its totient is φ = 3752448.

The previous prime is 12195529. The next prime is 12195553. The reversal of 12195534 is 43559121.

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, 78099 + ... + 78254.

It is an arithmetic number, because the mean of its divisors is an integer number (1641717).

Almost surely, 2^12195534 is an apocalyptic number.

12195534 is an abundant number, since it is smaller than the sum of its proper divisors (14071938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12195534 is a wasteful number, since it uses less digits than its factorization.

12195534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156371.

The product of its digits is 5400, while the sum is 30.

The square root of 12195534 is about 3492.2104747566. The cubic root of 12195534 is about 230.1796579904.

The spelling of 12195534 in words is "twelve million, one hundred ninety-five thousand, five hundred thirty-four".