332304640 has 72 divisors (see below), whose sum is σ = 805192920. Its totient is φ = 131383296.

The previous prime is 332304629. The next prime is 332304653. The reversal of 332304640 is 46403233.

It can be written as a sum of positive squares in 4 ways, for example, as 84934656 + 247369984 = 9216^2 + 15728^2 .

It is a super-2 number, since 2×332304640² = 220852747531059200, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 112462 + ... + 115378.

It is an arithmetic number, because the mean of its divisors is an integer number (11183235).

Almost surely, 2^332304640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 332304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402596460).

332304640 is an abundant number, since it is smaller than the sum of its proper divisors (472888280).

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

332304640 is an equidigital number, since it uses as much as digits as its factorization.

332304640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 332304640 is about 18229.2248875261. The cubic root of 332304640 is about 692.6472832478.

Adding to 332304640 its reverse (46403233), we get a palindrome (378707873).

The spelling of 332304640 in words is "three hundred thirty-two million, three hundred four thousand, six hundred forty".