204745740 has 48 divisors (see below), whose sum is σ = 574656768. Its totient is φ = 54468544.

The previous prime is 204745733. The next prime is 204745777. The reversal of 204745740 is 47547402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22729 + ... + 30431.

It is an arithmetic number, because the mean of its divisors is an integer number (11972016).

Almost surely, 2^204745740 is an apocalyptic number.

204745740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204745740 is an abundant number, since it is smaller than the sum of its proper divisors (369911028).

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

204745740 is a wasteful number, since it uses less digits than its factorization.

204745740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158 (or 8156 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 204745740 is about 14308.9391640331. The cubic root of 204745740 is about 589.3929790519.

The spelling of 204745740 in words is "two hundred four million, seven hundred forty-five thousand, seven hundred forty".