12405867 has 8 divisors (see below), whose sum is σ = 16564800. Its totient is φ = 8258760.

The previous prime is 12405851. The next prime is 12405893. The reversal of 12405867 is 76850421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12405867 - 2⁴ = 12405851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12405817) 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, 117 + ... + 4982.

It is an arithmetic number, because the mean of its divisors is an integer number (2070600).

Almost surely, 2^12405867 is an apocalyptic number.

12405867 is a deficient number, since it is larger than the sum of its proper divisors (4158933).

12405867 is an equidigital number, since it uses as much as digits as its factorization.

12405867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12405867 is about 3522.1963318361. The cubic root of 12405867 is about 231.4954042505.

The spelling of 12405867 in words is "twelve million, four hundred five thousand, eight hundred sixty-seven".