11816836 has 12 divisors (see below), whose sum is σ = 21896028. Its totient is φ = 5560832.

The previous prime is 11816821. The next prime is 11816837. The reversal of 11816836 is 63861811.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 7322436 = 2120^2 + 2706^2 .

It is a super-2 number, since 2×11816836² = 279275226101792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (11816837) by changing a digit.

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, 86821 + ... + 86956.

It is an arithmetic number, because the mean of its divisors is an integer number (1824669).

Almost surely, 2^11816836 is an apocalyptic number.

It is an amenable number.

11816836 is a deficient number, since it is larger than the sum of its proper divisors (10079192).

11816836 is a wasteful number, since it uses less digits than its factorization.

11816836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173798 (or 173796 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 11816836 is about 3437.5625085226. The cubic root of 11816836 is about 227.7720354073.

The spelling of 11816836 in words is "eleven million, eight hundred sixteen thousand, eight hundred thirty-six".