11081880 has 128 divisors (see below), whose sum is σ = 38246400. Its totient is φ = 2851200.

The previous prime is 11081879. The next prime is 11081887. The reversal of 11081880 is 8818011.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11081887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33315 + ... + 33645.

It is an arithmetic number, because the mean of its divisors is an integer number (298800).

Almost surely, 2^11081880 is an apocalyptic number.

11081880 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 11081880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19123200).

11081880 is an abundant number, since it is smaller than the sum of its proper divisors (27164520).

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

11081880 is a wasteful number, since it uses less digits than its factorization.

11081880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 11081880 is about 3328.9457790718. The cubic root of 11081880 is about 222.9484621527.

Adding to 11081880 its reverse (8818011), we get a palindrome (19899891).

The spelling of 11081880 in words is "eleven million, eighty-one thousand, eight hundred eighty".