12534534 has 32 divisors (see below), whose sum is σ = 28153440. Its totient is φ = 4133376.

The previous prime is 12534523. The next prime is 12534539. The reversal of 12534534 is 43543521.

12534534 is a `hidden beast` number, since 125 + 3 + 4 + 534 = 666.

12534534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12534534² = 314229085194312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12534498 and 12534507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12534539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4042 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (879795).

Almost surely, 2^12534534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12534534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14076720).

12534534 is an abundant number, since it is smaller than the sum of its proper divisors (15618906).

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

12534534 is a wasteful number, since it uses less digits than its factorization.

12534534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2495 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 12534534 is about 3540.4143825264. The cubic root of 12534534 is about 232.2929686678.

The spelling of 12534534 in words is "twelve million, five hundred thirty-four thousand, five hundred thirty-four".