12387534 has 8 divisors (see below), whose sum is σ = 24775080. Its totient is φ = 4129176.

The previous prime is 12387527. The next prime is 12387539. The reversal of 12387534 is 43578321.

12387534 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.

12387534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12387495 and 12387504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032289 + ... + 1032300.

It is an arithmetic number, because the mean of its divisors is an integer number (3096885).

Almost surely, 2^12387534 is an apocalyptic number.

12387534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12387534 is a wasteful number, since it uses less digits than its factorization.

12387534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064594.

The product of its digits is 20160, while the sum is 33.

The square root of 12387534 is about 3519.5928741830. The cubic root of 12387534 is about 231.3813158245.

It can be divided in two parts, 12387 and 534, that added together give a palindrome (12921).

The spelling of 12387534 in words is "twelve million, three hundred eighty-seven thousand, five hundred thirty-four".