327844640 has 48 divisors (see below), whose sum is σ = 781430328. Its totient is φ = 129970176.

The previous prime is 327844637. The next prime is 327844663. The reversal of 327844640 is 46448723.

It can be written as a sum of positive squares in 4 ways, for example, as 147962896 + 179881744 = 12164^2 + 13412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 327844594 and 327844603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9014 + ... + 27146.

Almost surely, 2^327844640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 327844640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390715164).

327844640 is an abundant number, since it is smaller than the sum of its proper divisors (453585688).

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

327844640 is a wasteful number, since it uses less digits than its factorization.

327844640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18261 (or 18253 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 327844640 is about 18106.4806077824. The cubic root of 327844640 is about 689.5345457118.

The spelling of 327844640 in words is "three hundred twenty-seven million, eight hundred forty-four thousand, six hundred forty".