12009624 has 32 divisors (see below), whose sum is σ = 32754240. Its totient is φ = 3639200.

The previous prime is 12009623. The next prime is 12009629. The reversal of 12009624 is 42690021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12009594 and 12009603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22482 + ... + 23009.

It is an arithmetic number, because the mean of its divisors is an integer number (1023570).

Almost surely, 2^12009624 is an apocalyptic number.

It is an amenable number.

12009624 is an abundant number, since it is smaller than the sum of its proper divisors (20744616).

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

12009624 is a wasteful number, since it uses less digits than its factorization.

12009624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45511 (or 45507 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12009624 is about 3465.4904414816. The cubic root of 12009624 is about 229.0040362109.

Adding to 12009624 its reverse (42690021), we get a palindrome (54699645).

The spelling of 12009624 in words is "twelve million, nine thousand, six hundred twenty-four".