329239428 has 72 divisors (see below), whose sum is σ = 902174112. Its totient is φ = 93171456.

The previous prime is 329239381. The next prime is 329239441. The reversal of 329239428 is 824932923.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 329239428.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60300 + ... + 65532.

It is an arithmetic number, because the mean of its divisors is an integer number (12530196).

Almost surely, 2^329239428 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 329239428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451087056).

329239428 is an abundant number, since it is smaller than the sum of its proper divisors (572934684).

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

329239428 is a wasteful number, since it uses less digits than its factorization.

329239428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361 (or 5352 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 329239428 is about 18144.9559933332. The cubic root of 329239428 is about 690.5110182088.

The spelling of 329239428 in words is "three hundred twenty-nine million, two hundred thirty-nine thousand, four hundred twenty-eight".