20434403204 has 12 divisors (see below), whose sum is σ = 36162006300. Its totient is φ = 10102401408.

The previous prime is 20434403069. The next prime is 20434403219. The reversal of 20434403204 is 40230443402.

It can be written as a sum of positive squares in 2 ways, for example, as 6707937604 + 13726465600 = 81902^2 + 117160^2 .

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, 28699649 + ... + 28700360.

It is an arithmetic number, because the mean of its divisors is an integer number (3013500525).

Almost surely, 2^20434403204 is an apocalyptic number.

It is an amenable number.

20434403204 is a deficient number, since it is larger than the sum of its proper divisors (15727603096).

20434403204 is a wasteful number, since it uses less digits than its factorization.

20434403204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57400102 (or 57400100 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20434403204 its reverse (40230443402), we get a palindrome (60664846606).

The spelling of 20434403204 in words is "twenty billion, four hundred thirty-four million, four hundred three thousand, two hundred four".