326766820 has 12 divisors (see below), whose sum is σ = 686210364. Its totient is φ = 130706720.

The previous prime is 326766757. The next prime is 326766821. The reversal of 326766820 is 28667623.

It can be written as a sum of positive squares in 2 ways, for example, as 123076836 + 203689984 = 11094^2 + 14272^2 .

It is not an unprimeable number, because it can be changed into a prime (326766821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8169151 + ... + 8169190.

It is an arithmetic number, because the mean of its divisors is an integer number (57184197).

Almost surely, 2^326766820 is an apocalyptic number.

It is an amenable number.

326766820 is an abundant number, since it is smaller than the sum of its proper divisors (359443544).

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

326766820 is a wasteful number, since it uses less digits than its factorization.

326766820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16338350 (or 16338348 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 326766820 is about 18076.6927284833. The cubic root of 326766820 is about 688.7780796257.

The spelling of 326766820 in words is "three hundred twenty-six million, seven hundred sixty-six thousand, eight hundred twenty".