200423100 has 72 divisors (see below), whose sum is σ = 581351680. Its totient is φ = 53311680.

The previous prime is 200423099. The next prime is 200423101. The reversal of 200423100 is 1324002.

It is an interprime number because it is at equal distance from previous prime (200423099) and next prime (200423101).

It is a super-2 number, since 2×200423100² = 80338838027220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200423101) 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 23 ways as a sum of consecutive naturals, for example, 192381 + ... + 193419.

Almost surely, 2^200423100 is an apocalyptic number.

200423100 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 200423100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290675840).

200423100 is an abundant number, since it is smaller than the sum of its proper divisors (380928580).

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

200423100 is a wasteful number, since it uses less digits than its factorization.

200423100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 200423100 is about 14157.0865646855. The cubic root of 200423100 is about 585.2156411528.

Adding to 200423100 its reverse (1324002), we get a palindrome (201747102).

The spelling of 200423100 in words is "two hundred million, four hundred twenty-three thousand, one hundred".