328157 has 4 divisors (see below), whose sum is σ = 329820. Its totient is φ = 326496.

The previous prime is 328129. The next prime is 328171. The reversal of 328157 is 751823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290521 + 37636 = 539^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 328157 - 2⁶ = 328093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328157.

It is not an unprimeable number, because it can be changed into a prime (328127) 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, 488 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (82455).

2³²⁸¹⁵⁷ is an apocalyptic number.

It is an amenable number.

328157 is a deficient number, since it is larger than the sum of its proper divisors (1663).

328157 is a wasteful number, since it uses less digits than its factorization.

328157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its digits is 1680, while the sum is 26.

The square root of 328157 is about 572.8498930785. The cubic root of 328157 is about 68.9753465099.

The spelling of 328157 in words is "three hundred twenty-eight thousand, one hundred fifty-seven".