11800180 has 36 divisors (see below), whose sum is σ = 28828548. Its totient is φ = 4045440.

The previous prime is 11800163. The next prime is 11800199. The reversal of 11800180 is 8100811.

It can be written as a sum of positive squares in 2 ways, for example, as 5866084 + 5934096 = 2422^2 + 2436^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5041 + ... + 7000.

It is an arithmetic number, because the mean of its divisors is an integer number (800793).

Almost surely, 2^11800180 is an apocalyptic number.

11800180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11800180 is an abundant number, since it is smaller than the sum of its proper divisors (17028368).

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

11800180 is a wasteful number, since it uses less digits than its factorization.

11800180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12064 (or 12055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 11800180 is about 3435.1390073766. The cubic root of 11800180 is about 227.6649691030.

Adding to 11800180 its reverse (8100811), we get a palindrome (19900991).

The spelling of 11800180 in words is "eleven million, eight hundred thousand, one hundred eighty".