328737 has 4 divisors (see below), whose sum is σ = 438320. Its totient is φ = 219156.

The previous prime is 328721. The next prime is 328753. The reversal of 328737 is 737823.

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, and also an emirpimes, since its reverse is a distinct semiprime: 737823 = 3 ⋅245941.

It is an interprime number because it is at equal distance from previous prime (328721) and next prime (328753).

It is not a de Polignac number, because 328737 - 2⁴ = 328721 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328737.

It is not an unprimeable number, because it can be changed into a prime (328777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54787 + ... + 54792.

It is an arithmetic number, because the mean of its divisors is an integer number (109580).

2³²⁸⁷³⁷ is an apocalyptic number.

It is an amenable number.

328737 is a deficient number, since it is larger than the sum of its proper divisors (109583).

328737 is a wasteful number, since it uses less digits than its factorization.

328737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109582.

The product of its digits is 7056, while the sum is 30.

The square root of 328737 is about 573.3559104082. The cubic root of 328737 is about 69.0159593414.

The spelling of 328737 in words is "three hundred twenty-eight thousand, seven hundred thirty-seven".