11521648 has 20 divisors (see below), whose sum is σ = 23636880. Its totient is φ = 5421824.

The previous prime is 11521637. The next prime is 11521649. The reversal of 11521648 is 84612511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20908 + ... + 21451.

It is an arithmetic number, because the mean of its divisors is an integer number (1181844).

Almost surely, 2^11521648 is an apocalyptic number.

It is an amenable number.

11521648 is an abundant number, since it is smaller than the sum of its proper divisors (12115232).

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

11521648 is a wasteful number, since it uses less digits than its factorization.

11521648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42384 (or 42378 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 11521648 is about 3394.3553143417. The cubic root of 11521648 is about 225.8594160525.

The spelling of 11521648 in words is "eleven million, five hundred twenty-one thousand, six hundred forty-eight".