328563993 has 16 divisors (see below), whose sum is σ = 457721856. Its totient is φ = 209249040.

The previous prime is 328563877. The next prime is 328564001. The reversal of 328563993 is 399365823.

It is not a de Polignac number, because 328563993 - 2¹² = 328559897 is a prime.

It is a super-2 number, since 2×328563993² = 215908594992208098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328563493) 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, 60246 + ... + 65472.

It is an arithmetic number, because the mean of its divisors is an integer number (28607616).

Almost surely, 2^328563993 is an apocalyptic number.

It is an amenable number.

328563993 is a deficient number, since it is larger than the sum of its proper divisors (129157863).

328563993 is a wasteful number, since it uses less digits than its factorization.

328563993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164.

The product of its digits is 1049760, while the sum is 48.

The square root of 328563993 is about 18126.3342405463. The cubic root of 328563993 is about 690.0385002672.

The spelling of 328563993 in words is "three hundred twenty-eight million, five hundred sixty-three thousand, nine hundred ninety-three".