328878813 has 8 divisors (see below), whose sum is σ = 445050208. Its totient is φ = 215979984.

The previous prime is 328878811. The next prime is 328878853. The reversal of 328878813 is 318878823.

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

It is not a de Polignac number, because 328878813 - 2¹ = 328878811 is a prime.

It is a super-4 number, since 4×328878813⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328878811) 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, 817906 + ... + 818307.

It is an arithmetic number, because the mean of its divisors is an integer number (55631276).

Almost surely, 2^328878813 is an apocalyptic number.

It is an amenable number.

328878813 is a deficient number, since it is larger than the sum of its proper divisors (116171395).

328878813 is a wasteful number, since it uses less digits than its factorization.

328878813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636283.

The product of its digits is 516096, while the sum is 48.

The square root of 328878813 is about 18135.0162117380. The cubic root of 328878813 is about 690.2588211977.

The spelling of 328878813 in words is "three hundred twenty-eight million, eight hundred seventy-eight thousand, eight hundred thirteen".