20203354400 has 36 divisors (see below), whose sum is σ = 49321440882. Its totient is φ = 8081341440.

The previous prime is 20203354363. The next prime is 20203354429. The reversal of 20203354400 is 445330202.

It can be written as a sum of positive squares in 3 ways, for example, as 15768327184 + 4435027216 = 125572^2 + 66596^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12626297 + ... + 12627896.

Almost surely, 2^20203354400 is an apocalyptic number.

20203354400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20203354400 is an abundant number, since it is smaller than the sum of its proper divisors (29118086482).

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

20203354400 is a wasteful number, since it uses less digits than its factorization.

20203354400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25254213 (or 25254200 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20203354400 its reverse (445330202), we get a palindrome (20648684602).

The spelling of 20203354400 in words is "twenty billion, two hundred three million, three hundred fifty-four thousand, four hundred".