328278008520 has 320 divisors, whose sum is σ = 1375642224000. Its totient is φ = 68213560320.

The previous prime is 328278008519. The next prime is 328278008521. The reversal of 328278008520 is 25800872823.

328278008520 is a `hidden beast` number, since 3 + 28 + 27 + 80 + 0 + 8 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (328278008519) and next prime (328278008521).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (328278008521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 408445 + ... + 907404.

It is an arithmetic number, because the mean of its divisors is an integer number (4298881950).

Almost surely, 2^328278008520 is an apocalyptic number.

328278008520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328278008520 is an abundant number, since it is smaller than the sum of its proper divisors (1047364215480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328278008520 is a wasteful number, since it uses less digits than its factorization.

328278008520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315890 (or 1315877 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 328278008520 in words is "three hundred twenty-eight billion, two hundred seventy-eight million, eight thousand, five hundred twenty".