18627012 has 18 divisors (see below), whose sum is σ = 47085038. Its totient is φ = 6208992.

The previous prime is 18626999. The next prime is 18627017. The reversal of 18627012 is 21072681.

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 171396 = 4296^2 + 414^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18627017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258673 + ... + 258744.

Almost surely, 2^18627012 is an apocalyptic number.

18627012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18627012 is an abundant number, since it is smaller than the sum of its proper divisors (28458026).

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

18627012 is a wasteful number, since it uses less digits than its factorization.

18627012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517427 (or 517422 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18627012 is about 4315.9022231742. The cubic root of 18627012 is about 265.0825042739.

Adding to 18627012 its reverse (21072681), we get a palindrome (39699693).

The spelling of 18627012 in words is "eighteen million, six hundred twenty-seven thousand, twelve".