11003203028 has 12 divisors (see below), whose sum is σ = 19290179412. Its totient is φ = 5491723200.

The previous prime is 11003203027. The next prime is 11003203111. The reversal of 11003203028 is 82030230011.

It can be written as a sum of positive squares in 2 ways, for example, as 6647467024 + 4355736004 = 81532^2 + 65998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003203027) 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, 2467073 + ... + 2471528.

It is an arithmetic number, because the mean of its divisors is an integer number (1607514951).

Almost surely, 2^11003203028 is an apocalyptic number.

It is an amenable number.

11003203028 is a deficient number, since it is larger than the sum of its proper divisors (8286976384).

11003203028 is a wasteful number, since it uses less digits than its factorization.

11003203028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939162 (or 4939160 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11003203028 its reverse (82030230011), we get a palindrome (93033433039).

The spelling of 11003203028 in words is "eleven billion, three million, two hundred three thousand, twenty-eight".