20423201200 has 60 divisors (see below), whose sum is σ = 49117601808. Its totient is φ = 8160812800.

The previous prime is 20423201159. The next prime is 20423201203. The reversal of 20423201200 is 210232402.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20423201203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 367230 + ... + 419170.

Almost surely, 2^20423201200 is an apocalyptic number.

20423201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423201200 is an abundant number, since it is smaller than the sum of its proper divisors (28694400608).

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

20423201200 is a wasteful number, since it uses less digits than its factorization.

20423201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52942 (or 52931 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20423201200 its reverse (210232402), we get a palindrome (20633433602).

The spelling of 20423201200 in words is "twenty billion, four hundred twenty-three million, two hundred one thousand, two hundred".