328471745 has 12 divisors (see below), whose sum is σ = 458520084. Its totient is φ = 225237600.

The previous prime is 328471733. The next prime is 328471771. The reversal of 328471745 is 547174823.

It can be written as a sum of positive squares in 2 ways, for example, as 191324224 + 137147521 = 13832^2 + 11711^2 .

It is not a de Polignac number, because 328471745 - 2⁴ = 328471729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 670106 + ... + 670595.

It is an arithmetic number, because the mean of its divisors is an integer number (38210007).

Almost surely, 2^328471745 is an apocalyptic number.

328471745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

328471745 is a deficient number, since it is larger than the sum of its proper divisors (130048339).

328471745 is a wasteful number, since it uses less digits than its factorization.

328471745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340720 (or 1340713 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 328471745 is about 18123.7894768175. The cubic root of 328471745 is about 689.9739155581.

The spelling of 328471745 in words is "three hundred twenty-eight million, four hundred seventy-one thousand, seven hundred forty-five".