328333457 has 8 divisors (see below), whose sum is σ = 333568872. Its totient is φ = 323136000.

The previous prime is 328333403. The next prime is 328333469. The reversal of 328333457 is 754333823.

It can be written as a sum of positive squares in 4 ways, for example, as 7529536 + 320803921 = 2744^2 + 17911^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 328333457 - 2¹⁸ = 328071313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328333457.

It is not an unprimeable number, because it can be changed into a prime (328333477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8207 + ... + 26907.

It is an arithmetic number, because the mean of its divisors is an integer number (41696109).

Almost surely, 2^328333457 is an apocalyptic number.

It is an amenable number.

328333457 is a deficient number, since it is larger than the sum of its proper divisors (5235415).

328333457 is a wasteful number, since it uses less digits than its factorization.

328333457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18979.

The product of its digits is 181440, while the sum is 38.

The square root of 328333457 is about 18119.9739790100. The cubic root of 328333457 is about 689.8770746502.

The spelling of 328333457 in words is "three hundred twenty-eight million, three hundred thirty-three thousand, four hundred fifty-seven".