328132445 has 16 divisors (see below), whose sum is σ = 399999600. Its totient is φ = 258361344.

The previous prime is 328132439. The next prime is 328132447. The reversal of 328132445 is 544231823.

It can be written as a sum of positive squares in 8 ways, for example, as 63712324 + 264420121 = 7982^2 + 16261^2 .

It is a cyclic number.

It is not a de Polignac number, because 328132445 - 2⁴ = 328132429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328132447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312281 + ... + 313329.

It is an arithmetic number, because the mean of its divisors is an integer number (24999975).

Almost surely, 2^328132445 is an apocalyptic number.

It is an amenable number.

328132445 is a deficient number, since it is larger than the sum of its proper divisors (71867155).

328132445 is a wasteful number, since it uses less digits than its factorization.

328132445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its digits is 23040, while the sum is 32.

The square root of 328132445 is about 18114.4264330947. The cubic root of 328132445 is about 689.7362606121.

The spelling of 328132445 in words is "three hundred twenty-eight million, one hundred thirty-two thousand, four hundred forty-five".