326905216 has 48 divisors (see below), whose sum is σ = 715877820. Its totient is φ = 148586240.

The previous prime is 326905213. The next prime is 326905217. The reversal of 326905216 is 612509623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326905213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4935 + ... + 26041.

Almost surely, 2^326905216 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 326905216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357938910).

326905216 is an abundant number, since it is smaller than the sum of its proper divisors (388972604).

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

326905216 is a wasteful number, since it uses less digits than its factorization.

326905216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21143 (or 21120 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 326905216 is about 18080.5203464945. The cubic root of 326905216 is about 688.8753056095.

The spelling of 326905216 in words is "three hundred twenty-six million, nine hundred five thousand, two hundred sixteen".