11855956 has 12 divisors (see below), whose sum is σ = 23711968. Its totient is φ = 5081112.

The previous prime is 11855933. The next prime is 11855959. The reversal of 11855956 is 65955811.

11855956 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11855959) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 211686 + ... + 211741.

Almost surely, 2^11855956 is an apocalyptic number.

It is an amenable number.

11855956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11855956 is a wasteful number, since it uses less digits than its factorization.

11855956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423438 (or 423436 counting only the distinct ones).

The product of its digits is 54000, while the sum is 40.

The square root of 11855956 is about 3443.2478853548. The cubic root of 11855956 is about 228.0231073328.

The spelling of 11855956 in words is "eleven million, eight hundred fifty-five thousand, nine hundred fifty-six".