12188872 has 8 divisors (see below), whose sum is σ = 22854150. Its totient is φ = 6094432.

The previous prime is 12188863. The next prime is 12188927. The reversal of 12188872 is 27888121.

It can be written as a sum of positive squares in only one way, i.e., 7322436 + 4866436 = 2706^2 + 2206^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761797 + ... + 761812.

Almost surely, 2^12188872 is an apocalyptic number.

It is an amenable number.

12188872 is a deficient number, since it is larger than the sum of its proper divisors (10665278).

12188872 is a wasteful number, since it uses less digits than its factorization.

12188872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523615 (or 1523611 counting only the distinct ones).

The product of its digits is 14336, while the sum is 37.

The square root of 12188872 is about 3491.2565073337. The cubic root of 12188872 is about 230.1377372843.

The spelling of 12188872 in words is "twelve million, one hundred eighty-eight thousand, eight hundred seventy-two".