204190720 has 88 divisors (see below), whose sum is σ = 515844000. Its totient is φ = 77340672.

The previous prime is 204190717. The next prime is 204190751. The reversal of 204190720 is 27091402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96231 + ... + 98329.

Almost surely, 2^204190720 is an apocalyptic number.

204190720 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 204190720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257922000).

204190720 is an abundant number, since it is smaller than the sum of its proper divisors (311653280).

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

204190720 is a wasteful number, since it uses less digits than its factorization.

204190720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 204190720 is about 14289.5318327788. The cubic root of 204190720 is about 588.8599261628.

The spelling of 204190720 in words is "two hundred four million, one hundred ninety thousand, seven hundred twenty".