18142712 has 32 divisors (see below), whose sum is σ = 39198720. Its totient is φ = 7711200.

The previous prime is 18142703. The next prime is 18142717. The reversal of 18142712 is 21724181.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142717) 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 7 ways as a sum of consecutive naturals, for example, 5837 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (1224960).

Almost surely, 2^18142712 is an apocalyptic number.

It is an amenable number.

18142712 is an abundant number, since it is smaller than the sum of its proper divisors (21056008).

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

18142712 is a wasteful number, since it uses less digits than its factorization.

18142712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2687 counting only the distinct ones).

The product of its digits is 896, while the sum is 26.

The square root of 18142712 is about 4259.4262524429. The cubic root of 18142712 is about 262.7649304103.

Adding to 18142712 its reverse (21724181), we get a palindrome (39866893).

The spelling of 18142712 in words is "eighteen million, one hundred forty-two thousand, seven hundred twelve".