11872836 has 18 divisors (see below), whose sum is σ = 30011982. Its totient is φ = 3957600.

The previous prime is 11872829. The next prime is 11872841. The reversal of 11872836 is 63827811.

It can be written as a sum of positive squares in only one way, i.e., 9884736 + 1988100 = 3144^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 329801 = 11872836 / (1 + 1 + 8 + 7 + 2 + 8 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 11872836.

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, 164865 + ... + 164936.

Almost surely, 2^11872836 is an apocalyptic number.

It is an amenable number.

11872836 is an abundant number, since it is smaller than the sum of its proper divisors (18139146).

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

11872836 is a wasteful number, since it uses less digits than its factorization.

11872836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329811 (or 329806 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 11872836 is about 3445.6981875957. The cubic root of 11872836 is about 228.1312725116.

The spelling of 11872836 in words is "eleven million, eight hundred seventy-two thousand, eight hundred thirty-six".