11521760 has 48 divisors (see below), whose sum is σ = 27515376. Its totient is φ = 4558848.

The previous prime is 11521751. The next prime is 11521793. The reversal of 11521760 is 6712511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16784 + ... + 17456.

It is an arithmetic number, because the mean of its divisors is an integer number (573237).

Almost surely, 2^11521760 is an apocalyptic number.

11521760 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 11521760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13757688).

11521760 is an abundant number, since it is smaller than the sum of its proper divisors (15993616).

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

11521760 is a wasteful number, since it uses less digits than its factorization.

11521760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 11521760 is about 3394.3718122799. The cubic root of 11521760 is about 225.8601478972.

Subtracting from 11521760 its reverse (6712511), we obtain a square (4809249 = 2193²).

The spelling of 11521760 in words is "eleven million, five hundred twenty-one thousand, seven hundred sixty".