12532158 has 20 divisors (see below), whose sum is σ = 28081680. Its totient is φ = 4177332.

The previous prime is 12532151. The next prime is 12532189. The reversal of 12532158 is 85123521.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12532151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38518 + ... + 38841.

It is an arithmetic number, because the mean of its divisors is an integer number (1404084).

Almost surely, 2^12532158 is an apocalyptic number.

12532158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12532158 is an abundant number, since it is smaller than the sum of its proper divisors (15549522).

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

12532158 is an equidigital number, since it uses as much as digits as its factorization.

12532158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77373 (or 77364 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12532158 is about 3540.0788126820. The cubic root of 12532158 is about 232.2782902077.

Adding to 12532158 its reverse (85123521), we get a palindrome (97655679).

The spelling of 12532158 in words is "twelve million, five hundred thirty-two thousand, one hundred fifty-eight".