328303639 has 4 divisors (see below), whose sum is σ = 328340560. Its totient is φ = 328266720.

The previous prime is 328303607. The next prime is 328303663. The reversal of 328303639 is 936303823.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 328303639 - 2⁵ = 328303607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328303598 and 328303607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328303669) 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, 3934 + ... + 25924.

It is an arithmetic number, because the mean of its divisors is an integer number (82085140).

Almost surely, 2^328303639 is an apocalyptic number.

328303639 is a deficient number, since it is larger than the sum of its proper divisors (36921).

328303639 is a wasteful number, since it uses less digits than its factorization.

328303639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36920.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 328303639 is about 18119.1511666524. The cubic root of 328303639 is about 689.8561900110.

The spelling of 328303639 in words is "three hundred twenty-eight million, three hundred three thousand, six hundred thirty-nine".