11520380 has 12 divisors (see below), whose sum is σ = 24192840. Its totient is φ = 4608144.

The previous prime is 11520371. The next prime is 11520391. The reversal of 11520380 is 8302511.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 576019 = 11520380 / (1 + 1 + 5 + 2 + 0 + 3 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287990 + ... + 288029.

It is an arithmetic number, because the mean of its divisors is an integer number (2016070).

Almost surely, 2^11520380 is an apocalyptic number.

11520380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11520380 is an abundant number, since it is smaller than the sum of its proper divisors (12672460).

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

11520380 is a wasteful number, since it uses less digits than its factorization.

11520380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576028 (or 576026 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 11520380 is about 3394.1685285206. The cubic root of 11520380 is about 225.8511301937.

Adding to 11520380 its reverse (8302511), we get a palindrome (19822891).

The spelling of 11520380 in words is "eleven million, five hundred twenty thousand, three hundred eighty".