328813747 has 4 divisors (see below), whose sum is σ = 328912056. Its totient is φ = 328715440.

The previous prime is 328813741. The next prime is 328813757. The reversal of 328813747 is 747318823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747318823 = 239 ⋅3126857.

It is a cyclic number.

It is not a de Polignac number, because 328813747 - 2⁷ = 328813619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328813741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43954 + ... + 50887.

It is an arithmetic number, because the mean of its divisors is an integer number (82228014).

Almost surely, 2^328813747 is an apocalyptic number.

328813747 is a deficient number, since it is larger than the sum of its proper divisors (98309).

328813747 is an equidigital number, since it uses as much as digits as its factorization.

328813747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98308.

The product of its digits is 225792, while the sum is 43.

The square root of 328813747 is about 18133.2221902231. Note that the first 3 decimals coincide. The cubic root of 328813747 is about 690.2132974963.

The spelling of 328813747 in words is "three hundred twenty-eight million, eight hundred thirteen thousand, seven hundred forty-seven".