11204028 has 48 divisors (see below), whose sum is σ = 31691520. Its totient is φ = 3394800.

The previous prime is 11204023. The next prime is 11204033. The reversal of 11204028 is 82040211.

It is an interprime number because it is at equal distance from previous prime (11204023) and next prime (11204033).

It is a super-3 number, since 3×11204028³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 11204028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (660240).

Almost surely, 2^11204028 is an apocalyptic number.

11204028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11204028 is an abundant number, since it is smaller than the sum of its proper divisors (20487492).

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

11204028 is a wasteful number, since it uses less digits than its factorization.

11204028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455 (or 9447 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 11204028 is about 3347.2418496428. The cubic root of 11204028 is about 223.7646071006.

Adding to 11204028 its reverse (82040211), we get a palindrome (93244239).

The spelling of 11204028 in words is "eleven million, two hundred four thousand, twenty-eight".