18712000 has 56 divisors (see below), whose sum is σ = 46360080. Its totient is φ = 7481600.

The previous prime is 18711991. The next prime is 18712007. The reversal of 18712000 is 21781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18712007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6831 + ... + 9169.

Almost surely, 2^18712000 is an apocalyptic number.

18712000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18712000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23180040).

18712000 is an abundant number, since it is smaller than the sum of its proper divisors (27648080).

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

18712000 is an equidigital number, since it uses as much as digits as its factorization.

18712000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366 (or 2346 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 18712000 is about 4325.7369314372. The cubic root of 18712000 is about 265.4850496912.

Adding to 18712000 its reverse (21781), we get a palindrome (18733781).

The spelling of 18712000 in words is "eighteen million, seven hundred twelve thousand".