11287836 has 126 divisors (see below), whose sum is σ = 34888560. Its totient is φ = 3184272.

The previous prime is 11287831. The next prime is 11287853. The reversal of 11287836 is 63878211.

11287836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (126).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11287836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287831) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 142845 + ... + 142923.

Almost surely, 2^11287836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11287836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17444280).

11287836 is an abundant number, since it is smaller than the sum of its proper divisors (23600724).

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

11287836 is an equidigital number, since it uses as much as digits as its factorization.

11287836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 91 counting only the distinct ones).

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

The square root of 11287836 is about 3359.7374897453. The cubic root of 11287836 is about 224.3211539176.

The spelling of 11287836 in words is "eleven million, two hundred eighty-seven thousand, eight hundred thirty-six".