326640032 has 12 divisors (see below), whose sum is σ = 643072626. Its totient is φ = 163320000.

The previous prime is 326640011. The next prime is 326640037. The reversal of 326640032 is 230046623.

It can be written as a sum of positive squares in only one way, i.e., 200392336 + 126247696 = 14156^2 + 11236^2 .

It is a super-2 number, since 2×326640032² = 213387421009922048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 326639983 and 326640010.

It is not an unprimeable number, because it can be changed into a prime (326640037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103719 + ... + 5103782.

Almost surely, 2^326640032 is an apocalyptic number.

326640032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

326640032 is a deficient number, since it is larger than the sum of its proper divisors (316432594).

326640032 is a wasteful number, since it uses less digits than its factorization.

326640032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207511 (or 10207503 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 326640032 is about 18073.1854414212. The cubic root of 326640032 is about 688.6889843984.

Adding to 326640032 its reverse (230046623), we get a palindrome (556686655).

The spelling of 326640032 in words is "three hundred twenty-six million, six hundred forty thousand, thirty-two".