204089400 has 72 divisors (see below), whose sum is σ = 685406280. Its totient is φ = 54423360.

The previous prime is 204089359. The next prime is 204089401. The reversal of 204089400 is 4980402.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204089401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54892 + ... + 58491.

Almost surely, 2^204089400 is an apocalyptic number.

204089400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204089400 is an abundant number, since it is smaller than the sum of its proper divisors (481316880).

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

204089400 is a wasteful number, since it uses less digits than its factorization.

204089400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113405 (or 113393 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 204089400 is about 14285.9861402705. The cubic root of 204089400 is about 588.7625120740.

The spelling of 204089400 in words is "two hundred four million, eighty-nine thousand, four hundred".