11811836 has 6 divisors (see below), whose sum is σ = 20670720. Its totient is φ = 5905916.

The previous prime is 11811797. The next prime is 11811847. The reversal of 11811836 is 63811811.

It is a junction number, because it is equal to n+sod(n) for n = 11811799 and 11811808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1476476 + ... + 1476483.

It is an arithmetic number, because the mean of its divisors is an integer number (3445120).

Almost surely, 2^11811836 is an apocalyptic number.

It is an amenable number.

11811836 is a deficient number, since it is larger than the sum of its proper divisors (8858884).

11811836 is a wasteful number, since it uses less digits than its factorization.

11811836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952963 (or 2952961 counting only the distinct ones).

The product of its digits is 1152, while the sum is 29.

The square root of 11811836 is about 3436.8351720733. The cubic root of 11811836 is about 227.7399055195.

The spelling of 11811836 in words is "eleven million, eight hundred eleven thousand, eight hundred thirty-six".