12189608 has 8 divisors (see below), whose sum is σ = 22855530. Its totient is φ = 6094800.

The previous prime is 12189607. The next prime is 12189623. The reversal of 12189608 is 80698121.

It can be written as a sum of positive squares in only one way, i.e., 11546404 + 643204 = 3398^2 + 802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12189607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761843 + ... + 761858.

Almost surely, 2^12189608 is an apocalyptic number.

It is an amenable number.

12189608 is a deficient number, since it is larger than the sum of its proper divisors (10665922).

12189608 is a wasteful number, since it uses less digits than its factorization.

12189608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523707 (or 1523703 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12189608 is about 3491.3619119192. The cubic root of 12189608 is about 230.1423693225.

The spelling of 12189608 in words is "twelve million, one hundred eighty-nine thousand, six hundred eight".