11001100 has 72 divisors (see below), whose sum is σ = 26592048. Its totient is φ = 3916800.

The previous prime is 11001083. The next prime is 11001103. The reversal of 11001100 is 110011.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11001100.

It is not an unprimeable number, because it can be changed into a prime (11001103) 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, 80232 + ... + 80368.

It is an arithmetic number, because the mean of its divisors is an integer number (369334).

Almost surely, 2^11001100 is an apocalyptic number.

11001100 is a gapful number since it is divisible by the number (10) 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 11001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13296024).

11001100 is an abundant number, since it is smaller than the sum of its proper divisors (15590948).

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

11001100 is a wasteful number, since it uses less digits than its factorization.

11001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 4.

The square root of 11001100 is about 3316.7906174493. The cubic root of 11001100 is about 222.4054220768.

Adding to 11001100 its reverse (110011), we get a palindrome (11111111).

Multiplying 11001100 by its reverse (110011), we get a square (1210242012100 = 1100110²).

11001100 divided by its reverse (110011) gives a square (100 = 10²).

The spelling of 11001100 in words is "eleven million, one thousand, one hundred".