20423434200 has 192 divisors, whose sum is σ = 71147946240. Its totient is φ = 4808686080.

The previous prime is 20423434123. The next prime is 20423434231. The reversal of 20423434200 is 243432402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122479 + ... + 236321.

It is an arithmetic number, because the mean of its divisors is an integer number (370562220).

Almost surely, 2^20423434200 is an apocalyptic number.

20423434200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20423434200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35573973120).

20423434200 is an abundant number, since it is smaller than the sum of its proper divisors (50724512040).

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

20423434200 is a wasteful number, since it uses less digits than its factorization.

20423434200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113898 (or 113889 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20423434200 its reverse (243432402), we get a palindrome (20666866602).

The spelling of 20423434200 in words is "twenty billion, four hundred twenty-three million, four hundred thirty-four thousand, two hundred".