12187038 has 16 divisors (see below), whose sum is σ = 24408720. Its totient is φ = 4056576.

The previous prime is 12187013. The next prime is 12187051. The reversal of 12187038 is 83078121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 12186996 and 12187014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6468 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (1525545).

Almost surely, 2^12187038 is an apocalyptic number.

12187038 is an abundant number, since it is smaller than the sum of its proper divisors (12221682).

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

12187038 is a wasteful number, since it uses less digits than its factorization.

12187038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 12187038 is about 3490.9938413008. The cubic root of 12187038 is about 230.1261941384.

It can be divided in two parts, 1218 and 7038, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 12187038 in words is "twelve million, one hundred eighty-seven thousand, thirty-eight".