11001144 has 64 divisors (see below), whose sum is σ = 34295040. Its totient is φ = 2856960.

The previous prime is 11001143. The next prime is 11001169. The reversal of 11001144 is 44110011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001143) 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, 1129 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (535860).

Almost surely, 2^11001144 is an apocalyptic number.

11001144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11001144 is an abundant number, since it is smaller than the sum of its proper divisors (23293896).

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

11001144 is a wasteful number, since it uses less digits than its factorization.

11001144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11001144 is about 3316.7972503607. The cubic root of 11001144 is about 222.4057185873.

Adding to 11001144 its reverse (44110011), we get a palindrome (55111155).

It can be divided in two parts, 110011 and 44, that multiplied together give a palindrome (4840484).

The spelling of 11001144 in words is "eleven million, one thousand, one hundred forty-four".