20304400324 has 24 divisors (see below), whose sum is σ = 38290777560. Its totient is φ = 9365190144.

The previous prime is 20304400289. The next prime is 20304400343. The reversal of 20304400324 is 42300440302.

It can be written as a sum of positive squares in 4 ways, for example, as 1708168900 + 18596231424 = 41330^2 + 136368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20304400295 and 20304400304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44959 + ... + 206470.

It is an arithmetic number, because the mean of its divisors is an integer number (1595449065).

Almost surely, 2^20304400324 is an apocalyptic number.

It is an amenable number.

20304400324 is a deficient number, since it is larger than the sum of its proper divisors (17986377236).

20304400324 is a wasteful number, since it uses less digits than its factorization.

20304400324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252999 (or 252997 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20304400324 its reverse (42300440302), we get a palindrome (62604840626).

The spelling of 20304400324 in words is "twenty billion, three hundred four million, four hundred thousand, three hundred twenty-four".