18708012 has 18 divisors (see below), whose sum is σ = 47289788. Its totient is φ = 6235992.

The previous prime is 18707971. The next prime is 18708017. The reversal of 18708012 is 21080781.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (18708017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259798 + ... + 259869.

Almost surely, 2^18708012 is an apocalyptic number.

18708012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18708012 is an abundant number, since it is smaller than the sum of its proper divisors (28581776).

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

18708012 is a wasteful number, since it uses less digits than its factorization.

18708012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519677 (or 519672 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 18708012 is about 4325.2759449543. The cubic root of 18708012 is about 265.4661878271.

Adding to 18708012 its reverse (21080781), we get a palindrome (39788793).

The spelling of 18708012 in words is "eighteen million, seven hundred eight thousand, twelve".