12001608 has 40 divisors (see below), whose sum is σ = 33617430. Its totient is φ = 4000320.

The previous prime is 12001571. The next prime is 12001667. The reversal of 12001608 is 80610021.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 5560164 = 2538^2 + 2358^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8613 + ... + 9908.

Almost surely, 2^12001608 is an apocalyptic number.

12001608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12001608 is an abundant number, since it is smaller than the sum of its proper divisors (21615822).

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

12001608 is a wasteful number, since it uses less digits than its factorization.

12001608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18539 (or 18526 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 12001608 is about 3464.3337021713. Note that the first 3 decimals coincide. The cubic root of 12001608 is about 228.9530741678.

Adding to 12001608 its reverse (80610021), we get a palindrome (92611629).

The spelling of 12001608 in words is "twelve million, one thousand, six hundred eight".