11287847 has 4 divisors (see below), whose sum is σ = 11951856. Its totient is φ = 10623840.

The previous prime is 11287831. The next prime is 11287853. The reversal of 11287847 is 74878211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11287847 - 2⁴ = 11287831 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 11287847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331979 + ... + 332012.

It is an arithmetic number, because the mean of its divisors is an integer number (2987964).

Almost surely, 2^11287847 is an apocalyptic number.

11287847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11287847 is a deficient number, since it is larger than the sum of its proper divisors (664009).

11287847 is an equidigital number, since it uses as much as digits as its factorization.

11287847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664008.

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

The square root of 11287847 is about 3359.7391267776. The cubic root of 11287847 is about 224.3212267846.

The spelling of 11287847 in words is "eleven million, two hundred eighty-seven thousand, eight hundred forty-seven".