326520040 has 64 divisors (see below), whose sum is σ = 915960960. Its totient is φ = 101771520.

The previous prime is 326520031. The next prime is 326520043. The reversal of 326520040 is 40025623.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 326519993 and 326520020.

It is not an unprimeable number, because it can be changed into a prime (326520043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49927 + ... + 56086.

It is an arithmetic number, because the mean of its divisors is an integer number (14311890).

Almost surely, 2^326520040 is an apocalyptic number.

It is an amenable number.

326520040 is an abundant number, since it is smaller than the sum of its proper divisors (589440920).

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

326520040 is a wasteful number, since it uses less digits than its factorization.

326520040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106042 (or 106038 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 326520040 is about 18069.8655224658. The cubic root of 326520040 is about 688.6046435526.

Adding to 326520040 its reverse (40025623), we get a palindrome (366545663).

The spelling of 326520040 in words is "three hundred twenty-six million, five hundred twenty thousand, forty".