200478438 has 24 divisors (see below), whose sum is σ = 444965976. Its totient is φ = 65196000.

The previous prime is 200478413. The next prime is 200478451. The reversal of 200478438 is 834874002.

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 11 ways as a sum of consecutive naturals, for example, 135088 + ... + 136563.

It is an arithmetic number, because the mean of its divisors is an integer number (18540249).

Almost surely, 2^200478438 is an apocalyptic number.

200478438 is an abundant number, since it is smaller than the sum of its proper divisors (244487538).

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

200478438 is a wasteful number, since it uses less digits than its factorization.

200478438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271700 (or 271697 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 200478438 is about 14159.0408573462. The cubic root of 200478438 is about 585.2694966932.

The spelling of 200478438 in words is "two hundred million, four hundred seventy-eight thousand, four hundred thirty-eight".