12013158 has 16 divisors (see below), whose sum is σ = 24091056. Its totient is φ = 3993600.

The previous prime is 12013117. The next prime is 12013189. The reversal of 12013158 is 85131021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (1505691).

Almost surely, 2^12013158 is an apocalyptic number.

12013158 is an abundant number, since it is smaller than the sum of its proper divisors (12077898).

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

12013158 is a wasteful number, since it uses less digits than its factorization.

12013158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12013158 is about 3466.0002885170. Note that the first 3 decimals coincide. The cubic root of 12013158 is about 229.0264965559.

Adding to 12013158 its reverse (85131021), we get a palindrome (97144179).

The spelling of 12013158 in words is "twelve million, thirteen thousand, one hundred fifty-eight".