328728136086 has 96 divisors (see below), whose sum is σ = 833988130560. Its totient is φ = 91635066432.

The previous prime is 328728136081. The next prime is 328728136117. The reversal of 328728136086 is 680631827823.

328728136086 is a `hidden beast` number, since 3 + 2 + 8 + 7 + 28 + 1 + 3 + 608 + 6 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328728136081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1057861 + ... + 1332863.

It is an arithmetic number, because the mean of its divisors is an integer number (8687376360).

Almost surely, 2^328728136086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328728136086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416994065280).

328728136086 is an abundant number, since it is smaller than the sum of its proper divisors (505259994474).

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

328728136086 is a wasteful number, since it uses less digits than its factorization.

328728136086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275250 (or 275247 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 328728136086 in words is "three hundred twenty-eight billion, seven hundred twenty-eight million, one hundred thirty-six thousand, eighty-six".