18382512 has 40 divisors (see below), whose sum is σ = 48300480. Its totient is φ = 6022720.

The previous prime is 18382471. The next prime is 18382537. The reversal of 18382512 is 21528381.

It is a self number, because there is not a number n which added to its sum of digits gives 18382512.

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, 414 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (1207512).

Almost surely, 2^18382512 is an apocalyptic number.

18382512 is a gapful number since it is divisible by the number (12) 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 18382512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24150240).

18382512 is an abundant number, since it is smaller than the sum of its proper divisors (29917968).

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

18382512 is a wasteful number, since it uses less digits than its factorization.

18382512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561 (or 6555 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 18382512 is about 4287.4831778096. The cubic root of 18382512 is about 263.9175591987.

The spelling of 18382512 in words is "eighteen million, three hundred eighty-two thousand, five hundred twelve".