20874734800 has 60 divisors (see below), whose sum is σ = 50176266316. Its totient is φ = 8345779200.

The previous prime is 20874734791. The next prime is 20874734801. The reversal of 20874734800 is 843747802.

It can be written as a sum of positive squares in 6 ways, for example, as 228493456 + 20646241344 = 15116^2 + 143688^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874734801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876652 + ... + 900148.

Almost surely, 2^20874734800 is an apocalyptic number.

20874734800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20874734800 is an abundant number, since it is smaller than the sum of its proper divisors (29301531516).

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

20874734800 is a wasteful number, since it uses less digits than its factorization.

20874734800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25736 (or 25725 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 20874734800 in words is "twenty billion, eight hundred seventy-four million, seven hundred thirty-four thousand, eight hundred".