12533538 has 16 divisors (see below), whose sum is σ = 25105536. Its totient is φ = 4171440.

The previous prime is 12533531. The next prime is 12533561. The reversal of 12533538 is 83533521.

It is not an unprimeable number, because it can be changed into a prime (12533531) 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, 4320 + ... + 6612.

It is an arithmetic number, because the mean of its divisors is an integer number (1569096).

Almost surely, 2^12533538 is an apocalyptic number.

12533538 is an abundant number, since it is smaller than the sum of its proper divisors (12571998).

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

12533538 is a wasteful number, since it uses less digits than its factorization.

12533538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209.

The product of its digits is 10800, while the sum is 30.

The square root of 12533538 is about 3540.2737182314. The cubic root of 12533538 is about 232.2868158018.

The spelling of 12533538 in words is "twelve million, five hundred thirty-three thousand, five hundred thirty-eight".