330697728 has 154 divisors (see below), whose sum is σ = 993392724. Its totient is φ = 109983744.

The previous prime is 330697711. The next prime is 330697747. The reversal of 330697728 is 827796033.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 746275 + ... + 746717.

Almost surely, 2^330697728 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 330697728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496696362).

330697728 is an abundant number, since it is smaller than the sum of its proper divisors (662694996).

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

330697728 is an frugal number, since it uses more digits than its factorization.

330697728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 330697728 is about 18185.0963153897. The cubic root of 330697728 is about 691.5290100336.

The spelling of 330697728 in words is "three hundred thirty million, six hundred ninety-seven thousand, seven hundred twenty-eight".