12912018 has 32 divisors (see below), whose sum is σ = 30533760. Its totient is φ = 3561600.

The previous prime is 12912017. The next prime is 12912037. The reversal of 12912018 is 81021921.

It is not an unprimeable number, because it can be changed into a prime (12912013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4083 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (954180).

Almost surely, 2^12912018 is an apocalyptic number.

12912018 is an abundant number, since it is smaller than the sum of its proper divisors (17621742).

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

12912018 is a wasteful number, since it uses less digits than its factorization.

12912018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 12912018 is about 3593.3296536778. The cubic root of 12912018 is about 234.6018185390.

Adding to 12912018 its reverse (81021921), we get a palindrome (93933939).

The spelling of 12912018 in words is "twelve million, nine hundred twelve thousand, eighteen".