12890018 has 8 divisors (see below), whose sum is σ = 20352720. Its totient is φ = 6105780.

The previous prime is 12889997. The next prime is 12890027. The reversal of 12890018 is 81009821.

12890018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169568 + ... + 169643.

It is an arithmetic number, because the mean of its divisors is an integer number (2544090).

Almost surely, 2^12890018 is an apocalyptic number.

12890018 is a deficient number, since it is larger than the sum of its proper divisors (7462702).

12890018 is a wasteful number, since it uses less digits than its factorization.

12890018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339232.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 12890018 is about 3590.2671209814. The cubic root of 12890018 is about 234.4685015498.

Adding to 12890018 its reverse (81009821), we get a palindrome (93899839).

The spelling of 12890018 in words is "twelve million, eight hundred ninety thousand, eighteen".