11145728 has 40 divisors (see below), whose sum is σ = 24306480. Its totient is φ = 5063680.

The previous prime is 11145707. The next prime is 11145751. The reversal of 11145728 is 82754111.

It is a self number, because there is not a number n which added to its sum of digits gives 11145728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4643 + ... + 6621.

It is an arithmetic number, because the mean of its divisors is an integer number (607662).

Almost surely, 2^11145728 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 11145728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12153240).

11145728 is an abundant number, since it is smaller than the sum of its proper divisors (13160752).

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

11145728 is an equidigital number, since it uses as much as digits as its factorization.

11145728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 1992 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 11145728 is about 3338.5218285942. The cubic root of 11145728 is about 223.3758133100.

Adding to 11145728 its reverse (82754111), we get a palindrome (93899839).

The spelling of 11145728 in words is "eleven million, one hundred forty-five thousand, seven hundred twenty-eight".