328825729 has 4 divisors (see below), whose sum is σ = 332988160. Its totient is φ = 324663300.

The previous prime is 328825681. The next prime is 328825741. The reversal of 328825729 is 927528823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 328825729 - 2¹¹ = 328823681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328825759) 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, 2081097 + ... + 2081254.

It is an arithmetic number, because the mean of its divisors is an integer number (83247040).

Almost surely, 2^328825729 is an apocalyptic number.

It is an amenable number.

328825729 is a deficient number, since it is larger than the sum of its proper divisors (4162431).

328825729 is an equidigital number, since it uses as much as digits as its factorization.

328825729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162430.

The product of its digits is 483840, while the sum is 46.

The square root of 328825729 is about 18133.5525752678. The cubic root of 328825729 is about 690.2216812042.

The spelling of 328825729 in words is "three hundred twenty-eight million, eight hundred twenty-five thousand, seven hundred twenty-nine".