200078438 has 16 divisors (see below), whose sum is σ = 346140960. Its totient is φ = 84960576.

The previous prime is 200078413. The next prime is 200078443. The reversal of 200078438 is 834870002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64031 + ... + 67082.

It is an arithmetic number, because the mean of its divisors is an integer number (21633810).

Almost surely, 2^200078438 is an apocalyptic number.

200078438 is a deficient number, since it is larger than the sum of its proper divisors (146062522).

200078438 is a wasteful number, since it uses less digits than its factorization.

200078438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131231.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 200078438 is about 14144.9085539639. The cubic root of 200078438 is about 584.8799890180.

The spelling of 200078438 in words is "two hundred million, seventy-eight thousand, four hundred thirty-eight".