204940 has 12 divisors (see below), whose sum is σ = 430416. Its totient is φ = 81968.

The previous prime is 204931. The next prime is 204947. The reversal of 204940 is 49402.

It is not an unprimeable number, because it can be changed into a prime (204947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5104 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (35868).

2²⁰⁴⁹⁴⁰ is an apocalyptic number.

204940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204940 is an abundant number, since it is smaller than the sum of its proper divisors (225476).

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

204940 is a wasteful number, since it uses less digits than its factorization.

204940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 204940 is about 452.7029931423. The cubic root of 204940 is about 58.9579322837.

The spelling of 204940 in words is "two hundred four thousand, nine hundred forty".