20204400224 has 24 divisors (see below), whose sum is σ = 41149049760. Its totient is φ = 9753847936.

The previous prime is 20204400217. The next prime is 20204400233. The reversal of 20204400224 is 42200440202.

It is a junction number, because it is equal to n+sod(n) for n = 20204400196 and 20204400205.

It is a congruent number.

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, 10885064 + ... + 10886919.

It is an arithmetic number, because the mean of its divisors is an integer number (1714543740).

Almost surely, 2^20204400224 is an apocalyptic number.

It is an amenable number.

20204400224 is an abundant number, since it is smaller than the sum of its proper divisors (20944649536).

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

20204400224 is a wasteful number, since it uses less digits than its factorization.

20204400224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21772022 (or 21772014 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20204400224 its reverse (42200440202), we get a palindrome (62404840426).

The spelling of 20204400224 in words is "twenty billion, two hundred four million, four hundred thousand, two hundred twenty-four".