328605029 has 4 divisors (see below), whose sum is σ = 337486284. Its totient is φ = 319723776.

The previous prime is 328604989. The next prime is 328605031. The reversal of 328605029 is 920506823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 920506823 = 9257 ⋅99439.

It can be written as a sum of positive squares in 2 ways, for example, as 292581025 + 36024004 = 17105^2 + 6002^2 .

It is a cyclic number.

It is not a de Polignac number, because 328605029 - 2¹² = 328600933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328605029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328605829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4440572 + ... + 4440645.

It is an arithmetic number, because the mean of its divisors is an integer number (84371571).

Almost surely, 2^328605029 is an apocalyptic number.

It is an amenable number.

328605029 is a deficient number, since it is larger than the sum of its proper divisors (8881255).

328605029 is an equidigital number, since it uses as much as digits as its factorization.

328605029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8881254.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 328605029 is about 18127.4661494650. The cubic root of 328605029 is about 690.0672265242.

The spelling of 328605029 in words is "three hundred twenty-eight million, six hundred five thousand, twenty-nine".