326728196 has 6 divisors (see below), whose sum is σ = 571774350. Its totient is φ = 163364096.

The previous prime is 326728187. The next prime is 326728249. The reversal of 326728196 is 691827623.

It can be written as a sum of positive squares in only one way, i.e., 296872900 + 29855296 = 17230^2 + 5464^2 .

It is a super-2 number, since 2×326728196² = 213502628122828832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40841021 + ... + 40841028.

It is an arithmetic number, because the mean of its divisors is an integer number (95295725).

Almost surely, 2^326728196 is an apocalyptic number.

It is an amenable number.

326728196 is a deficient number, since it is larger than the sum of its proper divisors (245046154).

326728196 is a wasteful number, since it uses less digits than its factorization.

326728196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81682053 (or 81682051 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 326728196 is about 18075.6243598942. The cubic root of 326728196 is about 688.7509405863.

The spelling of 326728196 in words is "three hundred twenty-six million, seven hundred twenty-eight thousand, one hundred ninety-six".