328532769 has 12 divisors (see below), whose sum is σ = 502462116. Its totient is φ = 206138112.

The previous prime is 328532753. The next prime is 328532779. The reversal of 328532769 is 967235823.

328532769 is a `hidden beast` number, since 328 + 53 + 276 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 223203600 + 105329169 = 14940^2 + 10263^2 .

It is not a de Polignac number, because 328532769 - 2⁴ = 328532753 is a prime.

It is a super-2 number, since 2×328532769² = 215867560613614722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328532779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1073484 + ... + 1073789.

It is an arithmetic number, because the mean of its divisors is an integer number (41871843).

Almost surely, 2^328532769 is an apocalyptic number.

It is an amenable number.

328532769 is a deficient number, since it is larger than the sum of its proper divisors (173929347).

328532769 is a wasteful number, since it uses less digits than its factorization.

328532769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147296 (or 2147293 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 328532769 is about 18125.4729317610. The cubic root of 328532769 is about 690.0166410605.

The spelling of 328532769 in words is "three hundred twenty-eight million, five hundred thirty-two thousand, seven hundred sixty-nine".