328167257 has 4 divisors (see below), whose sum is σ = 358000656. Its totient is φ = 298333860.

The previous prime is 328167253. The next prime is 328167283. The reversal of 328167257 is 752761823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 328167257 - 2² = 328167253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328167253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14916683 + ... + 14916704.

It is an arithmetic number, because the mean of its divisors is an integer number (89500164).

Almost surely, 2^328167257 is an apocalyptic number.

It is an amenable number.

328167257 is a deficient number, since it is larger than the sum of its proper divisors (29833399).

328167257 is a wasteful number, since it uses less digits than its factorization.

328167257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29833398.

The product of its digits is 141120, while the sum is 41.

The square root of 328167257 is about 18115.3872991995. The cubic root of 328167257 is about 689.7606514234.

The spelling of 328167257 in words is "three hundred twenty-eight million, one hundred sixty-seven thousand, two hundred fifty-seven".