11161080 has 192 divisors, whose sum is σ = 42831360. Its totient is φ = 2467584.

The previous prime is 11161057. The next prime is 11161081. The reversal of 11161080 is 8016111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108309 + ... + 108411.

It is an arithmetic number, because the mean of its divisors is an integer number (223080).

Almost surely, 2^11161080 is an apocalyptic number.

11161080 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 11161080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21415680).

11161080 is an abundant number, since it is smaller than the sum of its proper divisors (31670280).

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

11161080 is a wasteful number, since it uses less digits than its factorization.

11161080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 11161080 is about 3340.8202585593. The cubic root of 11161080 is about 223.4783247001.

Adding to 11161080 its reverse (8016111), we get a palindrome (19177191).

The spelling of 11161080 in words is "eleven million, one hundred sixty-one thousand, eighty".