11099880 has 96 divisors (see below), whose sum is σ = 39368160. Its totient is φ = 2689920.

The previous prime is 11099873. The next prime is 11099897. The reversal of 11099880 is 8899011.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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, 2559 + ... + 5361.

It is an arithmetic number, because the mean of its divisors is an integer number (410085).

Almost surely, 2^11099880 is an apocalyptic number.

11099880 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 11099880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19684080).

11099880 is an abundant number, since it is smaller than the sum of its proper divisors (28268280).

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

11099880 is a wasteful number, since it uses less digits than its factorization.

11099880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 11099880 is about 3331.6482407361. The cubic root of 11099880 is about 223.0691065891.

The spelling of 11099880 in words is "eleven million, ninety-nine thousand, eight hundred eighty".