328606257 has 16 divisors (see below), whose sum is σ = 508209152. Its totient is φ = 184971600.

The previous prime is 328606249. The next prime is 328606259. The reversal of 328606257 is 752606823.

It is not a de Polignac number, because 328606257 - 2³ = 328606249 is a prime.

It is the 18128-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328606259) by changing a digit.

It is a nontrivial repunit in base 18127.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115369 + ... + 118182.

It is an arithmetic number, because the mean of its divisors is an integer number (31763072).

Almost surely, 2^328606257 is an apocalyptic number.

It is an amenable number.

328606257 is a deficient number, since it is larger than the sum of its proper divisors (179602895).

328606257 is a wasteful number, since it uses less digits than its factorization.

328606257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233628.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 328606257 is about 18127.5000206868. The cubic root of 328606257 is about 690.0680861190.

The spelling of 328606257 in words is "three hundred twenty-eight million, six hundred six thousand, two hundred fifty-seven".