11866356 has 36 divisors (see below), whose sum is σ = 30271332. Its totient is φ = 3919104.

The previous prime is 11866333. The next prime is 11866363. The reversal of 11866356 is 65366811.

It is a happy number.

11866356 is a `hidden beast` number, since 1 + 18 + 6 + 635 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6502500 + 5363856 = 2550^2 + 2316^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11866356.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2610 + ... + 5526.

Almost surely, 2^11866356 is an apocalyptic number.

It is an amenable number.

11866356 is an abundant number, since it is smaller than the sum of its proper divisors (18404976).

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

11866356 is a wasteful number, since it uses less digits than its factorization.

11866356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040 (or 3035 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 11866356 is about 3444.7577563597. The cubic root of 11866356 is about 228.0897615176.

The spelling of 11866356 in words is "eleven million, eight hundred sixty-six thousand, three hundred fifty-six".