18245712 has 40 divisors (see below), whose sum is σ = 47675520. Its totient is φ = 6012160.

The previous prime is 18245707. The next prime is 18245741. The reversal of 18245712 is 21754281.

It is a self number, because there is not a number n which added to its sum of digits gives 18245712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (1191888).

Almost surely, 2^18245712 is an apocalyptic number.

18245712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 4271×4272.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18245712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23837760).

18245712 is an abundant number, since it is smaller than the sum of its proper divisors (29429808).

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

18245712 is a wasteful number, since it uses less digits than its factorization.

18245712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4365 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 18245712 is about 4271.4999707363. The cubic root of 18245712 is about 263.2612496534.

Adding to 18245712 its reverse (21754281), we get a palindrome (39999993).

The spelling of 18245712 in words is "eighteen million, two hundred forty-five thousand, seven hundred twelve".