12649318 has 8 divisors (see below), whose sum is σ = 20698920. Its totient is φ = 5749680.

The previous prime is 12649313. The next prime is 12649319. The reversal of 12649318 is 81394621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287463 + ... + 287506.

It is an arithmetic number, because the mean of its divisors is an integer number (2587365).

Almost surely, 2^12649318 is an apocalyptic number.

12649318 is a deficient number, since it is larger than the sum of its proper divisors (8049602).

12649318 is a wasteful number, since it uses less digits than its factorization.

12649318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574982.

The product of its digits is 10368, while the sum is 34.

The square root of 12649318 is about 3556.5879716380. The cubic root of 12649318 is about 232.9998833403. Note that the first 3 decimals are identical.

The spelling of 12649318 in words is "twelve million, six hundred forty-nine thousand, three hundred eighteen".