12195616 has 24 divisors (see below), whose sum is σ = 24263820. Its totient is φ = 6033408.

The previous prime is 12195593. The next prime is 12195619. The reversal of 12195616 is 61659121.

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 608400 = 3404^2 + 780^2 .

It is not an unprimeable number, because it can be changed into a prime (12195619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140 + ... + 5068.

Almost surely, 2^12195616 is an apocalyptic number.

12195616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12195616 is a deficient number, since it is larger than the sum of its proper divisors (12068204).

12195616 is an equidigital number, since it uses as much as digits as its factorization.

12195616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036 (or 4028 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 12195616 is about 3492.2222151518. Note that the first 4 decimals coincide. The cubic root of 12195616 is about 230.1801738811.

The spelling of 12195616 in words is "twelve million, one hundred ninety-five thousand, six hundred sixteen".