12128567 has 8 divisors (see below), whose sum is σ = 13806720. Its totient is φ = 10546360.

The previous prime is 12128561. The next prime is 12128587. The reversal of 12128567 is 76582121.

12128567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12128567 - 2¹⁴ = 12112183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128561) 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, 23717 + ... + 24222.

It is an arithmetic number, because the mean of its divisors is an integer number (1725840).

Almost surely, 2^12128567 is an apocalyptic number.

12128567 is a deficient number, since it is larger than the sum of its proper divisors (1678153).

12128567 is a wasteful number, since it uses less digits than its factorization.

12128567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47973.

The product of its digits is 6720, while the sum is 32.

The square root of 12128567 is about 3482.6092229821. The cubic root of 12128567 is about 229.7575706463.

It can be divided in two parts, 1212 and 8567, that added together give a palindrome (9779).

The spelling of 12128567 in words is "twelve million, one hundred twenty-eight thousand, five hundred sixty-seven".