204765740 has 24 divisors (see below), whose sum is σ = 432199152. Its totient is φ = 81488960.

The previous prime is 204765727. The next prime is 204765763. The reversal of 204765740 is 47567402.

It is a self number, because there is not a number n which added to its sum of digits gives 204765740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22046 + ... + 29925.

It is an arithmetic number, because the mean of its divisors is an integer number (18008298).

Almost surely, 2^204765740 is an apocalyptic number.

204765740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204765740 is an abundant number, since it is smaller than the sum of its proper divisors (227433412).

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

204765740 is a wasteful number, since it uses less digits than its factorization.

204765740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52177 (or 52175 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 204765740 is about 14309.6380107954. The cubic root of 204765740 is about 589.4121694810.

The spelling of 204765740 in words is "two hundred four million, seven hundred sixty-five thousand, seven hundred forty".