20423400304 has 40 divisors (see below), whose sum is σ = 41504539968. Its totient is φ = 9724296960.

The previous prime is 20423400281. The next prime is 20423400331. The reversal of 20423400304 is 40300432402.

It is a congruent number.

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, 339187 + ... + 394834.

Almost surely, 2^20423400304 is an apocalyptic number.

It is an amenable number.

20423400304 is an abundant number, since it is smaller than the sum of its proper divisors (21081139664).

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

20423400304 is a wasteful number, since it uses less digits than its factorization.

20423400304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734113 (or 734107 counting only the distinct ones).

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

Adding to 20423400304 its reverse (40300432402), we get a palindrome (60723832706).

The spelling of 20423400304 in words is "twenty billion, four hundred twenty-three million, four hundred thousand, three hundred four".