328684243 has 4 divisors (see below), whose sum is σ = 329565808. Its totient is φ = 327802680.

The previous prime is 328684229. The next prime is 328684253. The reversal of 328684243 is 342486823.

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

It is a cyclic number.

It is not a de Polignac number, because 328684243 - 2²¹ = 326587091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328684196 and 328684205.

It is not an unprimeable number, because it can be changed into a prime (328684253) 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, 440223 + ... + 440968.

It is an arithmetic number, because the mean of its divisors is an integer number (82391452).

Almost surely, 2^328684243 is an apocalyptic number.

328684243 is a deficient number, since it is larger than the sum of its proper divisors (881565).

328684243 is an equidigital number, since it uses as much as digits as its factorization.

328684243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881564.

The product of its digits is 221184, while the sum is 40.

The square root of 328684243 is about 18129.6509343120. The cubic root of 328684243 is about 690.1226716013.

The spelling of 328684243 in words is "three hundred twenty-eight million, six hundred eighty-four thousand, two hundred forty-three".