11287447 has 4 divisors (see below), whose sum is σ = 11295880. Its totient is φ = 11279016.

The previous prime is 11287429. The next prime is 11287453. The reversal of 11287447 is 74478211.

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 11287447 - 2¹⁵ = 11254679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287417) 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, 1713 + ... + 5050.

It is an arithmetic number, because the mean of its divisors is an integer number (2823970).

Almost surely, 2^11287447 is an apocalyptic number.

11287447 is a deficient number, since it is larger than the sum of its proper divisors (8433).

11287447 is an equidigital number, since it uses as much as digits as its factorization.

11287447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432.

The product of its digits is 12544, while the sum is 34.

The square root of 11287447 is about 3359.6795978188. The cubic root of 11287447 is about 224.3185770454.

The spelling of 11287447 in words is "eleven million, two hundred eighty-seven thousand, four hundred forty-seven".