326740986 has 256 divisors, whose sum is σ = 958003200. Its totient is φ = 80870400.

The previous prime is 326740979. The next prime is 326740987. The reversal of 326740986 is 689047623.

It is not an unprimeable number, because it can be changed into a prime (326740987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2494141 + ... + 2494271.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^326740986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326740986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479001600).

326740986 is an abundant number, since it is smaller than the sum of its proper divisors (631262214).

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

326740986 is a wasteful number, since it uses less digits than its factorization.

326740986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 326740986 is about 18075.9781478071. The cubic root of 326740986 is about 688.7599276788.

It can be divided in two parts, 3267 and 40986, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 326740986 in words is "three hundred twenty-six million, seven hundred forty thousand, nine hundred eighty-six".