328040448 has 128 divisors (see below), whose sum is σ = 905955840. Its totient is φ = 105512960.

The previous prime is 328040441. The next prime is 328040459. The reversal of 328040448 is 844040823.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×328040448² = 215221071048081408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328040441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4620253 + ... + 4620323.

It is an arithmetic number, because the mean of its divisors is an integer number (7077780).

Almost surely, 2^328040448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328040448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452977920).

328040448 is an abundant number, since it is smaller than the sum of its proper divisors (577915392).

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

328040448 is an frugal number, since it uses more digits than its factorization.

328040448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 328040448 is about 18111.8869254421. The cubic root of 328040448 is about 689.6717951819.

The spelling of 328040448 in words is "three hundred twenty-eight million, forty thousand, four hundred forty-eight".