20430404304 has 80 divisors (see below), whose sum is σ = 56416639104. Its totient is φ = 6355148800.

The previous prime is 20430404299. The next prime is 20430404333. The reversal of 20430404304 is 40340403402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180417 + ... + 270944.

Almost surely, 2^20430404304 is an apocalyptic number.

20430404304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20430404304 is an abundant number, since it is smaller than the sum of its proper divisors (35986234800).

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

20430404304 is a wasteful number, since it uses less digits than its factorization.

20430404304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451436 (or 451430 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20430404304 its reverse (40340403402), we get a palindrome (60770807706).

The spelling of 20430404304 in words is "twenty billion, four hundred thirty million, four hundred four thousand, three hundred four".