11813236 has 12 divisors (see below), whose sum is σ = 20825028. Its totient is φ = 5863232.

The previous prime is 11813233. The next prime is 11813251. The reversal of 11813236 is 63231811.

It can be written as a sum of positive squares in 2 ways, for example, as 3724900 + 8088336 = 1930^2 + 2844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11813236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813233) 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, 10231 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (1735419).

Almost surely, 2^11813236 is an apocalyptic number.

It is an amenable number.

11813236 is a deficient number, since it is larger than the sum of its proper divisors (9011792).

11813236 is a wasteful number, since it uses less digits than its factorization.

11813236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21698 (or 21696 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 11813236 is about 3437.0388417939. The cubic root of 11813236 is about 227.7489028019.

The spelling of 11813236 in words is "eleven million, eight hundred thirteen thousand, two hundred thirty-six".