11783871 has 24 divisors (see below), whose sum is σ = 19076304. Its totient is φ = 6946560.

The previous prime is 11783869. The next prime is 11783897. The reversal of 11783871 is 17838711.

It is not a de Polignac number, because 11783871 - 2¹ = 11783869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11783801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2055 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (794846).

Almost surely, 2^11783871 is an apocalyptic number.

11783871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11783871 is a deficient number, since it is larger than the sum of its proper divisors (7292433).

11783871 is a wasteful number, since it uses less digits than its factorization.

11783871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271 (or 3268 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 11783871 is about 3432.7643379644. The cubic root of 11783871 is about 227.5600356792.

The spelling of 11783871 in words is "eleven million, seven hundred eighty-three thousand, eight hundred seventy-one".