11081568 has 48 divisors (see below), whose sum is σ = 29438640. Its totient is φ = 3649536.

The previous prime is 11081563. The next prime is 11081591. The reversal of 11081568 is 86518011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×11081568² = 245602298677248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11081563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7896 + ... + 9192.

It is an arithmetic number, because the mean of its divisors is an integer number (613305).

Almost surely, 2^11081568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11081568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14719320).

11081568 is an abundant number, since it is smaller than the sum of its proper divisors (18357072).

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

11081568 is a wasteful number, since it uses less digits than its factorization.

11081568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 11081568 is about 3328.8989170595. The cubic root of 11081568 is about 222.9463698310.

Adding to 11081568 its reverse (86518011), we get a palindrome (97599579).

The spelling of 11081568 in words is "eleven million, eighty-one thousand, five hundred sixty-eight".