20203004434 has 16 divisors (see below), whose sum is σ = 30957690456. Its totient is φ = 9885456000.

The previous prime is 20203004417. The next prime is 20203004441. The reversal of 20203004434 is 43440030202.

It can be written as a sum of positive squares in 4 ways, for example, as 19567813225 + 635191209 = 139885^2 + 25203^2 .

It is a super-2 number, since 2×20203004434² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396267 + ... + 444334.

Almost surely, 2^20203004434 is an apocalyptic number.

20203004434 is a deficient number, since it is larger than the sum of its proper divisors (10754686022).

20203004434 is a wasteful number, since it uses less digits than its factorization.

20203004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840861.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20203004434 its reverse (43440030202), we get a palindrome (63643034636).

The spelling of 20203004434 in words is "twenty billion, two hundred three million, four thousand, four hundred thirty-four".