204046640 has 80 divisors (see below), whose sum is σ = 545203200. Its totient is φ = 69569280.

The previous prime is 204046621. The next prime is 204046663. The reversal of 204046640 is 46640402.

It is a tau number, because it is divible by the number of its divisors (80).

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, 110525 + ... + 112355.

It is an arithmetic number, because the mean of its divisors is an integer number (6815040).

Almost surely, 2^204046640 is an apocalyptic number.

204046640 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 204046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272601600).

204046640 is an abundant number, since it is smaller than the sum of its proper divisors (341156560).

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

204046640 is a wasteful number, since it uses less digits than its factorization.

204046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 204046640 is about 14284.4894903528. The cubic root of 204046640 is about 588.7213908081.

The spelling of 204046640 in words is "two hundred four million, forty-six thousand, six hundred forty".