11203028 has 24 divisors (see below), whose sum is σ = 20396544. Its totient is φ = 5378400.

The previous prime is 11203013. The next prime is 11203033. The reversal of 11203028 is 82030211.

It is a junction number, because it is equal to n+sod(n) for n = 11202997 and 11203015.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20438 + ... + 20978.

It is an arithmetic number, because the mean of its divisors is an integer number (849856).

Almost surely, 2^11203028 is an apocalyptic number.

It is an amenable number.

11203028 is a deficient number, since it is larger than the sum of its proper divisors (9193516).

11203028 is a wasteful number, since it uses less digits than its factorization.

11203028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 11203028 is about 3347.0924695921. The cubic root of 11203028 is about 223.7579496359.

Subtracting from 11203028 its sum of digits (17), we obtain a triangular number (11203011 = T₄₇₃₃).

Adding to 11203028 its reverse (82030211), we get a palindrome (93233239).

The spelling of 11203028 in words is "eleven million, two hundred three thousand, twenty-eight".