11800120 has 32 divisors (see below), whose sum is σ = 26733600. Its totient is φ = 4687488.

The previous prime is 11800099. The next prime is 11800123. The reversal of 11800120 is 2100811.

It is a self number, because there is not a number n which added to its sum of digits gives 11800120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11800123) 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, 5341 + ... + 7219.

It is an arithmetic number, because the mean of its divisors is an integer number (835425).

Almost surely, 2^11800120 is an apocalyptic number.

11800120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11800120 is an abundant number, since it is smaller than the sum of its proper divisors (14933480).

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

11800120 is a wasteful number, since it uses less digits than its factorization.

11800120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 11800120 is about 3435.1302740944. The cubic root of 11800120 is about 227.6645832354.

Adding to 11800120 its reverse (2100811), we get a palindrome (13900931).

The spelling of 11800120 in words is "eleven million, eight hundred thousand, one hundred twenty".