328444439466 has 64 divisors (see below), whose sum is σ = 772296892416. Its totient is φ = 91805035200.

The previous prime is 328444439459. The next prime is 328444439537. The reversal of 328444439466 is 664934444823.

It is a happy number.

It is a super-2 number, since 2×328444439466² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1032871 + ... + 1312901.

It is an arithmetic number, because the mean of its divisors is an integer number (12067138944).

Almost surely, 2^328444439466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328444439466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386148446208).

328444439466 is an abundant number, since it is smaller than the sum of its proper divisors (443852452950).

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

328444439466 is a wasteful number, since it uses less digits than its factorization.

328444439466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281427.

The product of its digits is 47775744, while the sum is 57.

The spelling of 328444439466 in words is "three hundred twenty-eight billion, four hundred forty-four million, four hundred thirty-nine thousand, four hundred sixty-six".