12109896 has 24 divisors (see below), whose sum is σ = 32797830. Its totient is φ = 4036608.

The previous prime is 12109873. The next prime is 12109901. The reversal of 12109896 is 69890121.

12109896 = T₂₂₁ + T₂₂₂ + ... + T₄₃₆.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 617796 = 3390^2 + 786^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12109896² = 293299162261632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12109896.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84025 + ... + 84168.

Almost surely, 2^12109896 is an apocalyptic number.

It is an amenable number.

12109896 is an abundant number, since it is smaller than the sum of its proper divisors (20687934).

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

12109896 is a wasteful number, since it uses less digits than its factorization.

12109896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168205 (or 168198 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12109896 is about 3479.9275854535. The cubic root of 12109896 is about 229.6396120350.

The spelling of 12109896 in words is "twelve million, one hundred nine thousand, eight hundred ninety-six".