328321973 has 16 divisors (see below), whose sum is σ = 386394624. Its totient is φ = 273114240.

The previous prime is 328321967. The next prime is 328321999. The reversal of 328321973 is 379123823.

It is a happy number.

It is not a de Polignac number, because 328321973 - 2⁸ = 328321717 is a prime.

It is a super-2 number, since 2×328321973² = 215590635909225458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328321943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53636 + ... + 59442.

It is an arithmetic number, because the mean of its divisors is an integer number (24149664).

Almost surely, 2^328321973 is an apocalyptic number.

It is an amenable number.

328321973 is a deficient number, since it is larger than the sum of its proper divisors (58072651).

328321973 is a wasteful number, since it uses less digits than its factorization.

328321973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052.

The product of its digits is 54432, while the sum is 38.

The square root of 328321973 is about 18119.6570883668. The cubic root of 328321973 is about 689.8690313631.

The spelling of 328321973 in words is "three hundred twenty-eight million, three hundred twenty-one thousand, nine hundred seventy-three".