328406078520 has 192 divisors, whose sum is σ = 1180487337120. Its totient is φ = 78653555712.

The previous prime is 328406078479. The next prime is 328406078537. The reversal of 328406078520 is 25870604823.

328406078520 is a `hidden beast` number, since 3 + 28 + 40 + 60 + 7 + 8 + 520 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 775114 + ... + 1121433.

Almost surely, 2^328406078520 is an apocalyptic number.

328406078520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328406078520 is an abundant number, since it is smaller than the sum of its proper divisors (852081258600).

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

328406078520 is a wasteful number, since it uses less digits than its factorization.

328406078520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896614 (or 1896607 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 328406078520 in words is "three hundred twenty-eight billion, four hundred six million, seventy-eight thousand, five hundred twenty".