12678018 has 8 divisors (see below), whose sum is σ = 25356048. Its totient is φ = 4226004.

The previous prime is 12677993. The next prime is 12678019. The reversal of 12678018 is 81087621.

It is a happy number.

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

12678018 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12678018.

It is not an unprimeable number, because it can be changed into a prime (12678019) 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, 1056496 + ... + 1056507.

It is an arithmetic number, because the mean of its divisors is an integer number (3169506).

Almost surely, 2^12678018 is an apocalyptic number.

12678018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12678018 is a wasteful number, since it uses less digits than its factorization.

12678018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113008.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 12678018 is about 3560.6204515505. The cubic root of 12678018 is about 233.1759678157.

It can be divided in two parts, 12 and 678018, that added together give a triangular number (678030 = T₁₁₆₄).

The spelling of 12678018 in words is "twelve million, six hundred seventy-eight thousand, eighteen".