328291465 has 8 divisors (see below), whose sum is σ = 396127368. Its totient is φ = 261181440.

The previous prime is 328291459. The next prime is 328291529. The reversal of 328291465 is 564192823.

It can be written as a sum of positive squares in 4 ways, for example, as 20394256 + 307897209 = 4516^2 + 17547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328291465 - 2¹⁹ = 327767177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180472 + ... + 182281.

It is an arithmetic number, because the mean of its divisors is an integer number (49515921).

Almost surely, 2^328291465 is an apocalyptic number.

It is an amenable number.

328291465 is a deficient number, since it is larger than the sum of its proper divisors (67835903).

328291465 is a wasteful number, since it uses less digits than its factorization.

328291465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362939.

The product of its digits is 103680, while the sum is 40.

The square root of 328291465 is about 18118.8152206484. The cubic root of 328291465 is about 689.8476629321.

The spelling of 328291465 in words is "three hundred twenty-eight million, two hundred ninety-one thousand, four hundred sixty-five".