328297428 has 96 divisors (see below), whose sum is σ = 903168000. Its totient is φ = 102837600.

The previous prime is 328297399. The next prime is 328297433. The reversal of 328297428 is 824792823.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284653 + ... + 285803.

It is an arithmetic number, because the mean of its divisors is an integer number (9408000).

Almost surely, 2^328297428 is an apocalyptic number.

328297428 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328297428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451584000).

328297428 is an abundant number, since it is smaller than the sum of its proper divisors (574870572).

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

328297428 is a wasteful number, since it uses less digits than its factorization.

328297428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1314 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 328297428 is about 18118.9797726031. The cubic root of 328297428 is about 689.8518396441.

The spelling of 328297428 in words is "three hundred twenty-eight million, two hundred ninety-seven thousand, four hundred twenty-eight".