328976731 has 8 divisors (see below), whose sum is σ = 339741584. Its totient is φ = 318310560.

The previous prime is 328976729. The next prime is 328976737. The reversal of 328976731 is 137679823.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 328976731 - 2¹ = 328976729 is a prime.

It is a super-2 number, since 2×328976731² = 216451379078892722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328976737) 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, 17865 + ... + 31258.

It is an arithmetic number, because the mean of its divisors is an integer number (42467698).

Almost surely, 2^328976731 is an apocalyptic number.

328976731 is a deficient number, since it is larger than the sum of its proper divisors (10764853).

328976731 is a wasteful number, since it uses less digits than its factorization.

328976731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49341.

The product of its digits is 381024, while the sum is 46.

The square root of 328976731 is about 18137.7157051267. The cubic root of 328976731 is about 690.3273186238.

The spelling of 328976731 in words is "three hundred twenty-eight million, nine hundred seventy-six thousand, seven hundred thirty-one".