329239728 has 120 divisors (see below), whose sum is σ = 966671760. Its totient is φ = 108615168.

The previous prime is 329239723. The next prime is 329239741. The reversal of 329239728 is 827932923.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not an unprimeable number, because it can be changed into a prime (329239721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3394176 + ... + 3394272.

It is an arithmetic number, because the mean of its divisors is an integer number (8055598).

Almost surely, 2^329239728 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 329239728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483335880).

329239728 is an abundant number, since it is smaller than the sum of its proper divisors (637432032).

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

329239728 is an frugal number, since it uses more digits than its factorization.

329239728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 102 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 329239728 is about 18144.9642600916. The cubic root of 329239728 is about 690.5112279378.

The spelling of 329239728 in words is "three hundred twenty-nine million, two hundred thirty-nine thousand, seven hundred twenty-eight".