27718012 has 12 divisors (see below), whose sum is σ = 55436080. Its totient is φ = 11879136.

The previous prime is 27718001. The next prime is 27718037. The reversal of 27718012 is 21081772.

27718012 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 989929 = 27718012 / (2 + 7 + 7 + 1 + 8 + 0 + 1 + 2).

It is a congruent 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, 494937 + ... + 494992.

Almost surely, 2^27718012 is an apocalyptic number.

It is an amenable number.

27718012 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.

27718012 is a wasteful number, since it uses less digits than its factorization.

27718012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989940 (or 989938 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 27718012 is about 5264.7898343619. The cubic root of 27718012 is about 302.6360729253.

Adding to 27718012 its reverse (21081772), we get a palindrome (48799784).

The spelling of 27718012 in words is "twenty-seven million, seven hundred eighteen thousand, twelve".