204060640 has 96 divisors (see below), whose sum is σ = 554770944. Its totient is φ = 69480960.

The previous prime is 204060629. The next prime is 204060643. The reversal of 204060640 is 46060402.

204060640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204060643) 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, 186495 + ... + 187585.

It is an arithmetic number, because the mean of its divisors is an integer number (5778864).

Almost surely, 2^204060640 is an apocalyptic number.

204060640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204060640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277385472).

204060640 is an abundant number, since it is smaller than the sum of its proper divisors (350710304).

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

204060640 is a wasteful number, since it uses less digits than its factorization.

204060640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 204060640 is about 14284.9795239615. The cubic root of 204060640 is about 588.7348549047.

The spelling of 204060640 in words is "two hundred four million, sixty thousand, six hundred forty".