12740818 has 8 divisors (see below), whose sum is σ = 19147212. Its totient is φ = 6358416.

The previous prime is 12740809. The next prime is 12740867. The reversal of 12740818 is 81804721.

It can be written as a sum of positive squares in 2 ways, for example, as 11269449 + 1471369 = 3357^2 + 1213^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12740818.

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, 4605 + ... + 6832.

Almost surely, 2^12740818 is an apocalyptic number.

12740818 is a deficient number, since it is larger than the sum of its proper divisors (6406394).

12740818 is a wasteful number, since it uses less digits than its factorization.

12740818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12740818 is about 3569.4282455318. The cubic root of 12740818 is about 233.5603427902.

The spelling of 12740818 in words is "twelve million, seven hundred forty thousand, eight hundred eighteen".