12207987 has 24 divisors (see below), whose sum is σ = 19347120. Its totient is φ = 7356480.

The previous prime is 12207977. The next prime is 12208019. The reversal of 12207987 is 78970221.

It is not a de Polignac number, because 12207987 - 2⁷ = 12207859 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12207977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31189 + ... + 31577.

It is an arithmetic number, because the mean of its divisors is an integer number (806130).

Almost surely, 2^12207987 is an apocalyptic number.

12207987 is the 2853-rd pentagonal number.

12207987 is a deficient number, since it is larger than the sum of its proper divisors (7139133).

12207987 is a wasteful number, since it uses less digits than its factorization.

12207987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 12207987 is about 3493.9929879724. The cubic root of 12207987 is about 230.2579777039.

The spelling of 12207987 in words is "twelve million, two hundred seven thousand, nine hundred eighty-seven".