11180720 has 20 divisors (see below), whose sum is σ = 25995360. Its totient is φ = 4472256.

The previous prime is 11180669. The next prime is 11180749. The reversal of 11180720 is 2708111.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11180692 and 11180701.

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 3 ways as a sum of consecutive naturals, for example, 69800 + ... + 69959.

It is an arithmetic number, because the mean of its divisors is an integer number (1299768).

Almost surely, 2^11180720 is an apocalyptic number.

11180720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11180720 is an abundant number, since it is smaller than the sum of its proper divisors (14814640).

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

11180720 is a wasteful number, since it uses less digits than its factorization.

11180720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139772 (or 139766 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 11180720 is about 3343.7583644755. The cubic root of 11180720 is about 223.6093318046.

Adding to 11180720 its reverse (2708111), we get a palindrome (13888831).

The spelling of 11180720 in words is "eleven million, one hundred eighty thousand, seven hundred twenty".