20604204224 has 28 divisors (see below), whose sum is σ = 40891815600. Its totient is φ = 10300754688.

The previous prime is 20604204211. The next prime is 20604204253. The reversal of 20604204224 is 42240240602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20604204193 and 20604204202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626462 + ... + 658530.

Almost surely, 2^20604204224 is an apocalyptic number.

It is an amenable number.

20604204224 is a deficient number, since it is larger than the sum of its proper divisors (20287611376).

20604204224 is a wasteful number, since it uses less digits than its factorization.

20604204224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42120 (or 42110 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20604204224 its reverse (42240240602), we get a palindrome (62844444826).

The spelling of 20604204224 in words is "twenty billion, six hundred four million, two hundred four thousand, two hundred twenty-four".