204743940 has 48 divisors (see below), whose sum is σ = 588783552. Its totient is φ = 53122176.

The previous prime is 204743927. The next prime is 204743947. The reversal of 204743940 is 49347402.

It is not an unprimeable number, because it can be changed into a prime (204743947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43894 + ... + 48333.

It is an arithmetic number, because the mean of its divisors is an integer number (12266324).

Almost surely, 2^204743940 is an apocalyptic number.

204743940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204743940 is an abundant number, since it is smaller than the sum of its proper divisors (384039612).

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

204743940 is a wasteful number, since it uses less digits than its factorization.

204743940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92276 (or 92274 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 204743940 is about 14308.8762661503. The cubic root of 204743940 is about 589.3912518520.

The spelling of 204743940 in words is "two hundred four million, seven hundred forty-three thousand, nine hundred forty".