200423144400 has 60 divisors (see below), whose sum is σ = 642022143072. Its totient is φ = 53446171520.

The previous prime is 200423144381. The next prime is 200423144429. The reversal of 200423144400 is 4441324002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×200423144400² (a number of 23 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 83508444 + ... + 83510843.

Almost surely, 2^200423144400 is an apocalyptic number.

200423144400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200423144400 is an abundant number, since it is smaller than the sum of its proper divisors (441598998672).

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

200423144400 is a wasteful number, since it uses less digits than its factorization.

200423144400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167019308 (or 167019297 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 200423144400 its reverse (4441324002), we get a palindrome (204864468402).

The spelling of 200423144400 in words is "two hundred billion, four hundred twenty-three million, one hundred forty-four thousand, four hundred".