326391768 has 96 divisors (see below), whose sum is σ = 921211200. Its totient is φ = 108265248.

The previous prime is 326391733. The next prime is 326391787. The reversal of 326391768 is 867193623.

326391768 is a `hidden beast` number, since 3 + 2 + 639 + 1 + 7 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 736555 + ... + 736997.

It is an arithmetic number, because the mean of its divisors is an integer number (9595950).

Almost surely, 2^326391768 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 326391768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460605600).

326391768 is an abundant number, since it is smaller than the sum of its proper divisors (594819432).

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

326391768 is a wasteful number, since it uses less digits than its factorization.

326391768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 827 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 326391768 is about 18066.3158391522. The cubic root of 326391768 is about 688.5144599466.

The spelling of 326391768 in words is "three hundred twenty-six million, three hundred ninety-one thousand, seven hundred sixty-eight".