200438 has 16 divisors (see below), whose sum is σ = 349440. Its totient is φ = 84456.

The previous prime is 200437. The next prime is 200443. The reversal of 200438 is 834002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (21840).

2²⁰⁰⁴³⁸ is an apocalyptic number.

200438 is a deficient number, since it is larger than the sum of its proper divisors (149002).

200438 is a wasteful number, since it uses less digits than its factorization.

200438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 200438 is about 447.7030265701. The cubic root of 200438 is about 58.5230142969.

The spelling of 200438 in words is "two hundred thousand, four hundred thirty-eight".