11281286 has 4 divisors (see below), whose sum is σ = 16921932. Its totient is φ = 5640642.

The previous prime is 11281271. The next prime is 11281289. The reversal of 11281286 is 68218211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820320 + ... + 2820323.

It is an arithmetic number, because the mean of its divisors is an integer number (4230483).

Almost surely, 2^11281286 is an apocalyptic number.

11281286 is a deficient number, since it is larger than the sum of its proper divisors (5640646).

11281286 is an equidigital number, since it uses as much as digits as its factorization.

11281286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640645.

The product of its digits is 1536, while the sum is 29.

The square root of 11281286 is about 3358.7625697569. The cubic root of 11281286 is about 224.2777565280.

Adding to 11281286 its reverse (68218211), we get a palindrome (79499497).

The spelling of 11281286 in words is "eleven million, two hundred eighty-one thousand, two hundred eighty-six".