11204388 has 72 divisors (see below), whose sum is σ = 30958200. Its totient is φ = 3396096.

The previous prime is 11204383. The next prime is 11204393. The reversal of 11204388 is 88340211.

It is an interprime number because it is at equal distance from previous prime (11204383) and next prime (11204393).

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 10614564 = 768^2 + 3258^2 .

It is not an unprimeable number, because it can be changed into a prime (11204383) 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 23 ways as a sum of consecutive naturals, for example, 41518 + ... + 41786.

It is an arithmetic number, because the mean of its divisors is an integer number (429975).

Almost surely, 2^11204388 is an apocalyptic number.

11204388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11204388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15479100).

11204388 is an abundant number, since it is smaller than the sum of its proper divisors (19753812).

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

11204388 is a wasteful number, since it uses less digits than its factorization.

11204388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 11204388 is about 3347.2956248291. The cubic root of 11204388 is about 223.7670036910.

Adding to 11204388 its reverse (88340211), we get a palindrome (99544599).

The spelling of 11204388 in words is "eleven million, two hundred four thousand, three hundred eighty-eight".