328024721 has 12 divisors (see below), whose sum is σ = 354901680. Its totient is φ = 302337360.

The previous prime is 328024693. The next prime is 328024783. The reversal of 328024721 is 127420823.

It is not a de Polignac number, because 328024721 - 2¹⁴ = 328008337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328029721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19706 + ... + 32316.

It is an arithmetic number, because the mean of its divisors is an integer number (29575140).

Almost surely, 2^328024721 is an apocalyptic number.

It is an amenable number.

328024721 is a deficient number, since it is larger than the sum of its proper divisors (26876959).

328024721 is a wasteful number, since it uses less digits than its factorization.

328024721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704 (or 12667 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 328024721 is about 18111.4527578546. The cubic root of 328024721 is about 689.6607735312.

The spelling of 328024721 in words is "three hundred twenty-eight million, twenty-four thousand, seven hundred twenty-one".