20424576328 has 32 divisors (see below), whose sum is σ = 41650290360. Its totient is φ = 9333388800.

The previous prime is 20424576323. The next prime is 20424576329. The reversal of 20424576328 is 82367542402.

It can be written as a sum of positive squares in 4 ways, for example, as 17892272644 + 2532303684 = 133762^2 + 50322^2 .

It is not an unprimeable number, because it can be changed into a prime (20424576323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961725 + ... + 982732.

Almost surely, 2^20424576328 is an apocalyptic number.

It is an amenable number.

20424576328 is an abundant number, since it is smaller than the sum of its proper divisors (21225714032).

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

20424576328 is a wasteful number, since it uses less digits than its factorization.

20424576328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944577 (or 1944573 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 20424576328 in words is "twenty billion, four hundred twenty-four million, five hundred seventy-six thousand, three hundred twenty-eight".