326198916 has 72 divisors (see below), whose sum is σ = 876264480. Its totient is φ = 102024576.

The previous prime is 326198879. The next prime is 326198923. The reversal of 326198916 is 619891623.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 70960 + ... + 75416.

It is an arithmetic number, because the mean of its divisors is an integer number (12170340).

Almost surely, 2^326198916 is an apocalyptic number.

326198916 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 326198916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438132240).

326198916 is an abundant number, since it is smaller than the sum of its proper divisors (550065564).

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

326198916 is a wasteful number, since it uses less digits than its factorization.

326198916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4593 (or 4588 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 326198916 is about 18060.9777143985. The cubic root of 326198916 is about 688.3788278995.

The spelling of 326198916 in words is "three hundred twenty-six million, one hundred ninety-eight thousand, nine hundred sixteen".