12724534 has 16 divisors (see below), whose sum is σ = 20298816. Its totient is φ = 5961600.

The previous prime is 12724531. The next prime is 12724553. The reversal of 12724534 is 43542721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724531) 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, 8524 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (1268676).

Almost surely, 2^12724534 is an apocalyptic number.

12724534 is a deficient number, since it is larger than the sum of its proper divisors (7574282).

12724534 is a wasteful number, since it uses less digits than its factorization.

12724534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671.

The product of its digits is 6720, while the sum is 28.

The square root of 12724534 is about 3567.1464786297. The cubic root of 12724534 is about 233.4607961180.

The spelling of 12724534 in words is "twelve million, seven hundred twenty-four thousand, five hundred thirty-four".