18412002 has 64 divisors (see below), whose sum is σ = 47523840. Its totient is φ = 5174928.

The previous prime is 18412001. The next prime is 18412027. The reversal of 18412002 is 20021481.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (18412001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24963 + ... + 25689.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^18412002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18412002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23761920).

18412002 is an abundant number, since it is smaller than the sum of its proper divisors (29111838).

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

18412002 is a wasteful number, since it uses less digits than its factorization.

18412002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 18412002 is about 4290.9208801841. The cubic root of 18412002 is about 264.0586130189.

Adding to 18412002 its reverse (20021481), we get a palindrome (38433483).

The spelling of 18412002 in words is "eighteen million, four hundred twelve thousand, two".