11847287 has 4 divisors (see below), whose sum is σ = 11856960. Its totient is φ = 11837616.

The previous prime is 11847281. The next prime is 11847299. The reversal of 11847287 is 78274811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11847287 - 2⁴ = 11847271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11847287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678 + ... + 5555.

It is an arithmetic number, because the mean of its divisors is an integer number (2964240).

Almost surely, 2^11847287 is an apocalyptic number.

11847287 is a deficient number, since it is larger than the sum of its proper divisors (9673).

11847287 is an equidigital number, since it uses as much as digits as its factorization.

11847287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672.

The product of its digits is 25088, while the sum is 38.

The square root of 11847287 is about 3441.9888146245. The cubic root of 11847287 is about 227.9675174306.

The spelling of 11847287 in words is "eleven million, eight hundred forty-seven thousand, two hundred eighty-seven".