11611288 has 32 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 5299200.

The previous prime is 11611283. The next prime is 11611309. The reversal of 11611288 is 88211611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611283) 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, 9513 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^11611288 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 11611288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11854080).

11611288 is an abundant number, since it is smaller than the sum of its proper divisors (12096872).

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

11611288 is a wasteful number, since it uses less digits than its factorization.

11611288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its digits is 768, while the sum is 28.

The square root of 11611288 is about 3407.5340056997. The cubic root of 11611288 is about 226.4436426081.

Adding to 11611288 its reverse (88211611), we get a palindrome (99822899).

The spelling of 11611288 in words is "eleven million, six hundred eleven thousand, two hundred eighty-eight".