328455540 has 192 divisors, whose sum is σ = 1205944320. Its totient is φ = 72627840.

The previous prime is 328455503. The next prime is 328455553. The reversal of 328455540 is 45554823.

328455540 is a `hidden beast` number, since 32 + 84 + 5 + 5 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 328455495 and 328455504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115779 + ... + 118581.

It is an arithmetic number, because the mean of its divisors is an integer number (6280960).

Almost surely, 2^328455540 is an apocalyptic number.

328455540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328455540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602972160).

328455540 is an abundant number, since it is smaller than the sum of its proper divisors (877488780).

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

328455540 is a wasteful number, since it uses less digits than its factorization.

328455540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2851 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The square root of 328455540 is about 18123.3424069624. The cubic root of 328455540 is about 689.9625688579.

The spelling of 328455540 in words is "three hundred twenty-eight million, four hundred fifty-five thousand, five hundred forty".