11003728 has 20 divisors (see below), whose sum is σ = 21614068. Its totient is φ = 5425920.

The previous prime is 11003723. The next prime is 11003737. The reversal of 11003728 is 82730011.

It can be written as a sum of positive squares in 2 ways, for example, as 4892944 + 6110784 = 2212^2 + 2472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11003699 and 11003708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3543 + ... + 5878.

Almost surely, 2^11003728 is an apocalyptic number.

It is an amenable number.

11003728 is a deficient number, since it is larger than the sum of its proper divisors (10610340).

11003728 is an equidigital number, since it uses as much as digits as its factorization.

11003728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502 (or 9496 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 11003728 is about 3317.1867598916. The cubic root of 11003728 is about 222.4231304549.

Adding to 11003728 its reverse (82730011), we get a palindrome (93733739).

The spelling of 11003728 in words is "eleven million, three thousand, seven hundred twenty-eight".