12195810 has 96 divisors (see below), whose sum is σ = 35223552. Its totient is φ = 2903040.

The previous prime is 12195793. The next prime is 12195811. The reversal of 12195810 is 1859121.

It is a super-2 number, since 2×12195810² = 297475563112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12195811) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 95967 + ... + 96093.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

Almost surely, 2^12195810 is an apocalyptic number.

12195810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12195810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17611776).

12195810 is an abundant number, since it is smaller than the sum of its proper divisors (23027742).

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

12195810 is a wasteful number, since it uses less digits than its factorization.

12195810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12195810 is about 3492.2499910516. The cubic root of 12195810 is about 230.1813943940.

The spelling of 12195810 in words is "twelve million, one hundred ninety-five thousand, eight hundred ten".