20110423200 has 216 divisors, whose sum is σ = 76147126272. Its totient is φ = 4596641280.

The previous prime is 20110423183. The next prime is 20110423237. The reversal of 20110423200 is 232401102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20110423200.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32097 + ... + 203103.

It is an arithmetic number, because the mean of its divisors is an integer number (352532992).

Almost surely, 2^20110423200 is an apocalyptic number.

20110423200 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 20110423200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38073563136).

20110423200 is an abundant number, since it is smaller than the sum of its proper divisors (56036703072).

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

20110423200 is a wasteful number, since it uses less digits than its factorization.

20110423200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171044 (or 171024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20110423200 its reverse (232401102), we get a palindrome (20342824302).

The spelling of 20110423200 in words is "twenty billion, one hundred ten million, four hundred twenty-three thousand, two hundred".