11889520 has 40 divisors (see below), whose sum is σ = 27788400. Its totient is φ = 4730880.

The previous prime is 11889491. The next prime is 11889529. The reversal of 11889520 is 2598811.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11889529) 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 7 ways as a sum of consecutive naturals, for example, 26256 + ... + 26704.

It is an arithmetic number, because the mean of its divisors is an integer number (694710).

Almost surely, 2^11889520 is an apocalyptic number.

11889520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11889520 is an abundant number, since it is smaller than the sum of its proper divisors (15898880).

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

11889520 is a wasteful number, since it uses less digits than its factorization.

11889520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 11889520 is about 3448.1183274360. The cubic root of 11889520 is about 228.2380810481.

The spelling of 11889520 in words is "eleven million, eight hundred eighty-nine thousand, five hundred twenty".