328632018 has 96 divisors (see below), whose sum is σ = 815717952. Its totient is φ = 87004800.

The previous prime is 328632013. The next prime is 328632043. The reversal of 328632018 is 810236823.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 328632018.

It is not an unprimeable number, because it can be changed into a prime (328632013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 309208 + ... + 310268.

It is an arithmetic number, because the mean of its divisors is an integer number (8497062).

Almost surely, 2^328632018 is an apocalyptic number.

328632018 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 328632018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407858976).

328632018 is an abundant number, since it is smaller than the sum of its proper divisors (487085934).

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

328632018 is a wasteful number, since it uses less digits than its factorization.

328632018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 328632018 is about 18128.2105570296. The cubic root of 328632018 is about 690.0861182157.

The spelling of 328632018 in words is "three hundred twenty-eight million, six hundred thirty-two thousand, eighteen".