328446426 has 256 divisors, whose sum is σ = 955514880. Its totient is φ = 72576000.

The previous prime is 328446421. The next prime is 328446473. The reversal of 328446426 is 624644823.

It is not an unprimeable number, because it can be changed into a prime (328446421) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4625971 + ... + 4626041.

It is an arithmetic number, because the mean of its divisors is an integer number (3732480).

Almost surely, 2^328446426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328446426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477757440).

328446426 is an abundant number, since it is smaller than the sum of its proper divisors (627068454).

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

328446426 is a wasteful number, since it uses less digits than its factorization.

328446426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161.

The product of its digits is 221184, while the sum is 39.

The square root of 328446426 is about 18123.0909615330. The cubic root of 328446426 is about 689.9561870941.

The spelling of 328446426 in words is "three hundred twenty-eight million, four hundred forty-six thousand, four hundred twenty-six".