11309056 has 52 divisors (see below), whose sum is σ = 24769584. Its totient is φ = 5120000.

The previous prime is 11309033. The next prime is 11309057. The reversal of 11309056 is 65090311.

It is a super-2 number, since 2×11309056² = 255789495222272, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 11309056.

It is not an unprimeable number, because it can be changed into a prime (11309057) 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, 44931 + ... + 45181.

Almost surely, 2^11309056 is an apocalyptic number.

11309056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11309056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12384792).

11309056 is an abundant number, since it is smaller than the sum of its proper divisors (13460528).

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

11309056 is an equidigital number, since it uses as much as digits as its factorization.

11309056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 11309056 is about 3362.8939917874. The cubic root of 11309056 is about 224.4616330187.

Adding to 11309056 its reverse (65090311), we get a palindrome (76399367).

The spelling of 11309056 in words is "eleven million, three hundred nine thousand, fifty-six".