12187995 has 16 divisors (see below), whose sum is σ = 19548672. Its totient is φ = 6484320.

The previous prime is 12187951. The next prime is 12188003. The reversal of 12187995 is 59978121.

It is not a de Polignac number, because 12187995 - 2¹⁰ = 12186971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7854 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (1221792).

Almost surely, 2^12187995 is an apocalyptic number.

12187995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12187995 is a deficient number, since it is larger than the sum of its proper divisors (7360677).

12187995 is a wasteful number, since it uses less digits than its factorization.

12187995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its digits is 45360, while the sum is 42.

The square root of 12187995 is about 3491.1309055949. The cubic root of 12187995 is about 230.1322176147.

The spelling of 12187995 in words is "twelve million, one hundred eighty-seven thousand, nine hundred ninety-five".