11811896 has 16 divisors (see below), whose sum is σ = 22415400. Its totient is φ = 5834464.

The previous prime is 11811887. The next prime is 11811913. The reversal of 11811896 is 69811811.

It is a super-2 number, since 2×11811896² = 279041774229632, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 8231 + ... + 9558.

Almost surely, 2^11811896 is an apocalyptic number.

It is an amenable number.

11811896 is a deficient number, since it is larger than the sum of its proper divisors (10603504).

11811896 is a wasteful number, since it uses less digits than its factorization.

11811896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17878 (or 17874 counting only the distinct ones).

The product of its digits is 3456, while the sum is 35.

The square root of 11811896 is about 3436.8439010231. The cubic root of 11811896 is about 227.7402911319.

The spelling of 11811896 in words is "eleven million, eight hundred eleven thousand, eight hundred ninety-six".