11124780 has 48 divisors (see below), whose sum is σ = 31557120. Its totient is φ = 2927808.

The previous prime is 11124779. The next prime is 11124791. The reversal of 11124780 is 8742111.

It is a self number, because there is not a number n which added to its sum of digits gives 11124780.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3567 + ... + 5913.

It is an arithmetic number, because the mean of its divisors is an integer number (657440).

Almost surely, 2^11124780 is an apocalyptic number.

11124780 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 11124780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15778560).

11124780 is an abundant number, since it is smaller than the sum of its proper divisors (20432340).

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

11124780 is a wasteful number, since it uses less digits than its factorization.

11124780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 11124780 is about 3335.3830364742. The cubic root of 11124780 is about 223.2357832431.

Adding to 11124780 its reverse (8742111), we get a palindrome (19866891).

The spelling of 11124780 in words is "eleven million, one hundred twenty-four thousand, seven hundred eighty".