11988522 has 72 divisors (see below), whose sum is σ = 32202144. Its totient is φ = 3156192.

The previous prime is 11988517. The next prime is 11988527. The reversal of 11988522 is 22588911.

It is an interprime number because it is at equal distance from previous prime (11988517) and next prime (11988527).

It is not an unprimeable number, because it can be changed into a prime (11988527) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21013 + ... + 21575.

It is an arithmetic number, because the mean of its divisors is an integer number (447252).

Almost surely, 2^11988522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11988522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16101072).

11988522 is an abundant number, since it is smaller than the sum of its proper divisors (20213622).

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

11988522 is a wasteful number, since it uses less digits than its factorization.

11988522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 588 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 11988522 is about 3462.4445121908. Note that the first 3 decimals coincide. The cubic root of 11988522 is about 228.8698306136.

The spelling of 11988522 in words is "eleven million, nine hundred eighty-eight thousand, five hundred twenty-two".