200243412 has 18 divisors (see below), whose sum is σ = 506170938. Its totient is φ = 66747792.

The previous prime is 200243411. The next prime is 200243429. The reversal of 200243412 is 214342002.

It can be written as a sum of positive squares in only one way, i.e., 162715536 + 37527876 = 12756^2 + 6126^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200243411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2781123 + ... + 2781194.

Almost surely, 2^200243412 is an apocalyptic number.

It is an amenable number.

200243412 is an abundant number, since it is smaller than the sum of its proper divisors (305927526).

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

200243412 is a wasteful number, since it uses less digits than its factorization.

200243412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562327 (or 5562322 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 200243412 is about 14150.7389206359. The cubic root of 200243412 is about 585.0406984616.

Adding to 200243412 its reverse (214342002), we get a palindrome (414585414).

It can be divided in two parts, 20024 and 3412, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 200243412 in words is "two hundred million, two hundred forty-three thousand, four hundred twelve".