326816880 has 240 divisors, whose sum is σ = 1137739680. Its totient is φ = 77137920.

The previous prime is 326816873. The next prime is 326816881. The reversal of 326816880 is 88618623.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326816881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2998266 + ... + 2998374.

It is an arithmetic number, because the mean of its divisors is an integer number (4740582).

Almost surely, 2^326816880 is an apocalyptic number.

326816880 is a gapful number since it is divisible by the number (30) 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 326816880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568869840).

326816880 is an abundant number, since it is smaller than the sum of its proper divisors (810922800).

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

326816880 is a wasteful number, since it uses less digits than its factorization.

326816880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 326816880 is about 18078.0773313978. The cubic root of 326816880 is about 688.8132509547.

The spelling of 326816880 in words is "three hundred twenty-six million, eight hundred sixteen thousand, eight hundred eighty".