204988 has 12 divisors (see below), whose sum is σ = 410032. Its totient is φ = 87840.

The previous prime is 204983. The next prime is 205019. The reversal of 204988 is 889402.

204988 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204983) by changing a digit.

204988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3633 + ... + 3688.

2²⁰⁴⁹⁸⁸ is an apocalyptic number.

204988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

204988 is a wasteful number, since it uses less digits than its factorization.

204988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332 (or 7330 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 204988 is about 452.7560049298. The cubic root of 204988 is about 58.9625348663.

The spelling of 204988 in words is "two hundred four thousand, nine hundred eighty-eight".