11081520 has 60 divisors (see below), whose sum is σ = 37217856. Its totient is φ = 2954880.

The previous prime is 11081507. The next prime is 11081527. The reversal of 11081520 is 2518011.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 11081493 and 11081502.

It is not an unprimeable number, because it can be changed into a prime (11081527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6976 + ... + 8415.

Almost surely, 2^11081520 is an apocalyptic number.

11081520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11081520 is an abundant number, since it is smaller than the sum of its proper divisors (26136336).

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

11081520 is a wasteful number, since it uses less digits than its factorization.

11081520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410 (or 15401 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 11081520 is about 3328.8917074606. The cubic root of 11081520 is about 222.9460479319.

Adding to 11081520 its reverse (2518011), we get a palindrome (13599531).

It can be divided in two parts, 1108 and 1520, that added together give a triangular number (2628 = T₇₂).

The spelling of 11081520 in words is "eleven million, eighty-one thousand, five hundred twenty".