11130520 has 32 divisors (see below), whose sum is σ = 25139520. Its totient is φ = 4435200.

The previous prime is 11130517. The next prime is 11130521. The reversal of 11130520 is 2503111.

11130520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11130520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18220 + ... + 18820.

It is an arithmetic number, because the mean of its divisors is an integer number (785610).

Almost surely, 2^11130520 is an apocalyptic number.

11130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11130520 is an abundant number, since it is smaller than the sum of its proper divisors (14009000).

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

11130520 is a wasteful number, since it uses less digits than its factorization.

11130520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 11130520 is about 3336.2433963966. The cubic root of 11130520 is about 223.2741706112.

Adding to 11130520 its reverse (2503111), we get a palindrome (13633631).

The spelling of 11130520 in words is "eleven million, one hundred thirty thousand, five hundred twenty".