11133780 has 96 divisors (see below), whose sum is σ = 36422400. Its totient is φ = 2540160.

The previous prime is 11133779. The next prime is 11133797. The reversal of 11133780 is 8733111.

11133780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11133780² = 247922114176800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11133780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20310 + ... + 20850.

It is an arithmetic number, because the mean of its divisors is an integer number (379400).

Almost surely, 2^11133780 is an apocalyptic number.

11133780 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 11133780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18211200).

11133780 is an abundant number, since it is smaller than the sum of its proper divisors (25288620).

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

11133780 is a wasteful number, since it uses less digits than its factorization.

11133780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11133780 is about 3336.7319340936. The cubic root of 11133780 is about 223.2959666203.

Adding to 11133780 its reverse (8733111), we get a palindrome (19866891).

The spelling of 11133780 in words is "eleven million, one hundred thirty-three thousand, seven hundred eighty".