328404237 has 16 divisors (see below), whose sum is σ = 502202880. Its totient is φ = 186993072.

The previous prime is 328404233. The next prime is 328404253. The reversal of 328404237 is 732404823.

It is not a de Polignac number, because 328404237 - 2² = 328404233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328404198 and 328404207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328404233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21687 + ... + 33572.

It is an arithmetic number, because the mean of its divisors is an integer number (31387680).

Almost surely, 2^328404237 is an apocalyptic number.

It is an amenable number.

328404237 is a deficient number, since it is larger than the sum of its proper divisors (173798643).

328404237 is a wasteful number, since it uses less digits than its factorization.

328404237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55552.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 328404237 is about 18121.9269670750. The cubic root of 328404237 is about 689.9266441655.

The spelling of 328404237 in words is "three hundred twenty-eight million, four hundred four thousand, two hundred thirty-seven".