11003238 has 48 divisors (see below), whose sum is σ = 25019280. Its totient is φ = 3490368.

The previous prime is 11003197. The next prime is 11003249. The reversal of 11003238 is 83230011.

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 11003238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55756 + ... + 55952.

It is an arithmetic number, because the mean of its divisors is an integer number (521235).

Almost surely, 2^11003238 is an apocalyptic number.

11003238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11003238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12509640).

11003238 is an abundant number, since it is smaller than the sum of its proper divisors (14016042).

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

11003238 is a wasteful number, since it uses less digits than its factorization.

11003238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 11003238 is about 3317.1129013044. The cubic root of 11003238 is about 222.4198288783.

Adding to 11003238 its reverse (83230011), we get a palindrome (94233249).

The spelling of 11003238 in words is "eleven million, three thousand, two hundred thirty-eight".