328972947 has 8 divisors (see below), whose sum is σ = 438750144. Its totient is φ = 219255528.

The previous prime is 328972937. The next prime is 328972949. The reversal of 328972947 is 749279823.

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

It is not a de Polignac number, because 328972947 - 2⁸ = 328972691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328972947.

It is not an unprimeable number, because it can be changed into a prime (328972949) by changing a digit.

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, 48 + ... + 25650.

It is an arithmetic number, because the mean of its divisors is an integer number (54843768).

Almost surely, 2^328972947 is an apocalyptic number.

328972947 is a deficient number, since it is larger than the sum of its proper divisors (109777197).

328972947 is a wasteful number, since it uses less digits than its factorization.

328972947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29889.

The product of its digits is 1524096, while the sum is 51.

The square root of 328972947 is about 18137.6113918013. The cubic root of 328972947 is about 690.3246718220.

The spelling of 328972947 in words is "three hundred twenty-eight million, nine hundred seventy-two thousand, nine hundred forty-seven".