12009528 has 24 divisors (see below), whose sum is σ = 32526000. Its totient is φ = 4003152.

The previous prime is 12009523. The next prime is 12009541. The reversal of 12009528 is 82590021.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83328 + ... + 83471.

It is an arithmetic number, because the mean of its divisors is an integer number (1355250).

Almost surely, 2^12009528 is an apocalyptic number.

12009528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12009528 is an abundant number, since it is smaller than the sum of its proper divisors (20516472).

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

12009528 is a wasteful number, since it uses less digits than its factorization.

12009528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166811 (or 166804 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 12009528 is about 3465.4765906005. The cubic root of 12009528 is about 229.0034260212.

Adding to 12009528 its reverse (82590021), we get a palindrome (94599549).

The spelling of 12009528 in words is "twelve million, nine thousand, five hundred twenty-eight".