11800080 has 120 divisors (see below), whose sum is σ = 41164032. Its totient is φ = 3141504.

The previous prime is 11800073. The next prime is 11800093. The reversal of 11800080 is 8000811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19137 + ... + 19743.

Almost surely, 2^11800080 is an apocalyptic number.

11800080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11800080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20582016).

11800080 is an abundant number, since it is smaller than the sum of its proper divisors (29363952).

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

11800080 is an equidigital number, since it uses as much as digits as its factorization.

11800080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11800080 is about 3435.1244518940. The cubic root of 11800080 is about 227.6643259896.

Adding to 11800080 its reverse (8000811), we get a palindrome (19800891).

It can be divided in two parts, 1 and 1800080, that added together give a palindrome (1800081).

The spelling of 11800080 in words is "eleven million, eight hundred thousand, eighty".