12912818 has 8 divisors (see below), whose sum is σ = 20388720. Its totient is φ = 6116580.

The previous prime is 12912773. The next prime is 12912847. The reversal of 12912818 is 81821921.

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

It is a super-2 number, since 2×12912818² = 333481737402248, which contains 22 as substring.

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, 169868 + ... + 169943.

It is an arithmetic number, because the mean of its divisors is an integer number (2548590).

Almost surely, 2^12912818 is an apocalyptic number.

12912818 is a deficient number, since it is larger than the sum of its proper divisors (7475902).

12912818 is a wasteful number, since it uses less digits than its factorization.

12912818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339832.

The product of its digits is 2304, while the sum is 32.

The square root of 12912818 is about 3593.4409693217. The cubic root of 12912818 is about 234.6066635751.

The spelling of 12912818 in words is "twelve million, nine hundred twelve thousand, eight hundred eighteen".