328820727 has 4 divisors (see below), whose sum is σ = 438427640. Its totient is φ = 219213816.

The previous prime is 328820693. The next prime is 328820731. The reversal of 328820727 is 727028823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727028823 = 3 ⋅242342941.

It is not a de Polignac number, because 328820727 - 2¹⁶ = 328755191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328820227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54803452 + ... + 54803457.

It is an arithmetic number, because the mean of its divisors is an integer number (109606910).

Almost surely, 2^328820727 is an apocalyptic number.

328820727 is a deficient number, since it is larger than the sum of its proper divisors (109606913).

328820727 is a wasteful number, since it uses less digits than its factorization.

328820727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109606912.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 328820727 is about 18133.4146536167. The cubic root of 328820727 is about 690.2181813703.

The spelling of 328820727 in words is "three hundred twenty-eight million, eight hundred twenty thousand, seven hundred twenty-seven".