11081286 has 36 divisors (see below), whose sum is σ = 25064676. Its totient is φ = 3669300.

The previous prime is 11081281. The next prime is 11081299. The reversal of 11081286 is 68218011.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11081281) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 73311 + ... + 73461.

It is an arithmetic number, because the mean of its divisors is an integer number (696241).

Almost surely, 2^11081286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11081286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12532338).

11081286 is an abundant number, since it is smaller than the sum of its proper divisors (13983390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11081286 is an frugal number, since it uses more digits than its factorization.

11081286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 11081286 is about 3328.8565604423. The cubic root of 11081286 is about 222.9444786603.

Adding to 11081286 its reverse (68218011), we get a palindrome (79299297).

The spelling of 11081286 in words is "eleven million, eighty-one thousand, two hundred eighty-six".