326840256 has 84 divisors (see below), whose sum is σ = 956840352. Its totient is φ = 106619904.

The previous prime is 326840243. The next prime is 326840279. The reversal of 326840256 is 652048623.

326840256 is a `hidden beast` number, since 326 + 84 + 0 + 256 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 326840256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21036 + ... + 33108.

Almost surely, 2^326840256 is an apocalyptic number.

326840256 is a gapful number since it is divisible by the number (36) 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 326840256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478420176).

326840256 is an abundant number, since it is smaller than the sum of its proper divisors (630000096).

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

326840256 is a wasteful number, since it uses less digits than its factorization.

326840256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12138 (or 12125 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 326840256 is about 18078.7238487676. The cubic root of 326840256 is about 688.8296733161.

Adding to 326840256 its reverse (652048623), we get a palindrome (978888879).

The spelling of 326840256 in words is "three hundred twenty-six million, eight hundred forty thousand, two hundred fifty-six".