328642445 has 8 divisors (see below), whose sum is σ = 394752480. Its totient is φ = 262659600.

The previous prime is 328642427. The next prime is 328642463. The reversal of 328642445 is 544246823.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (328642427) and next prime (328642463).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328642445 - 2¹⁴ = 328626061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328642399 and 328642408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26015 + ... + 36524.

It is an arithmetic number, because the mean of its divisors is an integer number (49344060).

Almost surely, 2^328642445 is an apocalyptic number.

It is an amenable number.

328642445 is a deficient number, since it is larger than the sum of its proper divisors (66110035).

328642445 is a wasteful number, since it uses less digits than its factorization.

328642445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63595.

The product of its digits is 184320, while the sum is 38.

The square root of 328642445 is about 18128.4981451857. The cubic root of 328642445 is about 690.0934166037.

The spelling of 328642445 in words is "three hundred twenty-eight million, six hundred forty-two thousand, four hundred forty-five".