326020640 has 96 divisors (see below), whose sum is σ = 852405120. Its totient is φ = 116838400.

The previous prime is 326020631. The next prime is 326020657. The reversal of 326020640 is 46020623.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123656 + ... + 126264.

It is an arithmetic number, because the mean of its divisors is an integer number (8879220).

Almost surely, 2^326020640 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 326020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426202560).

326020640 is an abundant number, since it is smaller than the sum of its proper divisors (526384480).

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

326020640 is a wasteful number, since it uses less digits than its factorization.

326020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 326020640 is about 18056.0416481575. The cubic root of 326020640 is about 688.2533995372.

The spelling of 326020640 in words is "three hundred twenty-six million, twenty thousand, six hundred forty".