328726811 has 8 divisors (see below), whose sum is σ = 380834784. Its totient is φ = 277905600.

The previous prime is 328726793. The next prime is 328726813. The reversal of 328726811 is 118627823.

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

It is a de Polignac number, because none of the positive numbers 2^k-328726811 is a prime.

It is a super-2 number, since 2×328726811² = 216122632540459442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328726813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321140 + ... + 322161.

It is an arithmetic number, because the mean of its divisors is an integer number (47604348).

Almost surely, 2^328726811 is an apocalyptic number.

328726811 is a deficient number, since it is larger than the sum of its proper divisors (52107973).

328726811 is an equidigital number, since it uses as much as digits as its factorization.

328726811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643381.

The product of its digits is 32256, while the sum is 38.

The square root of 328726811 is about 18130.8248847095. The cubic root of 328726811 is about 690.1524629835.

The spelling of 328726811 in words is "three hundred twenty-eight million, seven hundred twenty-six thousand, eight hundred eleven".