11001816 has 96 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 3093696.

The previous prime is 11001803. The next prime is 11001821. The reversal of 11001816 is 61810011.

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

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, 41701 + ... + 41963.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^11001816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11001816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17297280).

11001816 is an abundant number, since it is smaller than the sum of its proper divisors (23592744).

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

11001816 is a wasteful number, since it uses less digits than its factorization.

11001816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 11001816 is about 3316.8985513579. The cubic root of 11001816 is about 222.4102470133.

Adding to 11001816 its reverse (61810011), we get a palindrome (72811827).

It can be divided in two parts, 1100 and 1816, that added together give a square (2916 = 54²).

The spelling of 11001816 in words is "eleven million, one thousand, eight hundred sixteen".