12187320 has 32 divisors (see below), whose sum is σ = 36562320. Its totient is φ = 3249920.

The previous prime is 12187313. The next prime is 12187321. The reversal of 12187320 is 2378121.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50661 + ... + 50900.

Almost surely, 2^12187320 is an apocalyptic number.

12187320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12187320 is an abundant number, since it is smaller than the sum of its proper divisors (24375000).

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

12187320 is a wasteful number, since it uses less digits than its factorization.

12187320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101575 (or 101571 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12187320 is about 3491.0342307116. The cubic root of 12187320 is about 230.1279691140.

The spelling of 12187320 in words is "twelve million, one hundred eighty-seven thousand, three hundred twenty".