330028645 has 4 divisors (see below), whose sum is σ = 396034380. Its totient is φ = 264022912.

The previous prime is 330028637. The next prime is 330028663. The reversal of 330028645 is 546820033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546820033 = 1021 ⋅535573.

It can be written as a sum of positive squares in 2 ways, for example, as 198077476 + 131951169 = 14074^2 + 11487^2 .

It is a cyclic number.

It is not a de Polignac number, because 330028645 - 2³ = 330028637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33002860 + ... + 33002869.

It is an arithmetic number, because the mean of its divisors is an integer number (99008595).

Almost surely, 2^330028645 is an apocalyptic number.

It is an amenable number.

330028645 is a deficient number, since it is larger than the sum of its proper divisors (66005735).

330028645 is an equidigital number, since it uses as much as digits as its factorization.

330028645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66005734.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 330028645 is about 18166.6905351525. The cubic root of 330028645 is about 691.0623172785.

Adding to 330028645 its reverse (546820033), we get a palindrome (876848678).

The spelling of 330028645 in words is "three hundred thirty million, twenty-eight thousand, six hundred forty-five".