12015144 has 48 divisors (see below), whose sum is σ = 34257600. Its totient is φ = 3793824.

The previous prime is 12015139. The next prime is 12015167. The reversal of 12015144 is 44151021.

12015144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3024 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (713700).

Almost surely, 2^12015144 is an apocalyptic number.

It is an amenable number.

12015144 is an abundant number, since it is smaller than the sum of its proper divisors (22242456).

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

12015144 is a wasteful number, since it uses less digits than its factorization.

12015144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8814 (or 8807 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 12015144 is about 3466.2867740566. The cubic root of 12015144 is about 229.0391166502.

Adding to 12015144 its reverse (44151021), we get a palindrome (56166165).

The spelling of 12015144 in words is "twelve million, fifteen thousand, one hundred forty-four".