11130920 has 32 divisors (see below), whose sum is σ = 26519400. Its totient is φ = 4190208.

The previous prime is 11130913. The next prime is 11130923. The reversal of 11130920 is 2903111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9351364 + 1779556 = 3058^2 + 1334^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (11130923) 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, 7505 + ... + 8864.

Almost surely, 2^11130920 is an apocalyptic number.

11130920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11130920 is an abundant number, since it is smaller than the sum of its proper divisors (15388480).

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

11130920 is a wasteful number, since it uses less digits than its factorization.

11130920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16397 (or 16393 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 11130920 is about 3336.3033435226. The cubic root of 11130920 is about 223.2768451972.

The spelling of 11130920 in words is "eleven million, one hundred thirty thousand, nine hundred twenty".