204231660 has 96 divisors (see below), whose sum is σ = 595836864. Its totient is φ = 52224000.

The previous prime is 204231647. The next prime is 204231667. The reversal of 204231660 is 66132402.

204231660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204231660.

It is not an unprimeable number, because it can be changed into a prime (204231667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149380 + ... + 150740.

It is an arithmetic number, because the mean of its divisors is an integer number (6206634).

Almost surely, 2^204231660 is an apocalyptic number.

204231660 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 204231660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297918432).

204231660 is an abundant number, since it is smaller than the sum of its proper divisors (391605204).

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

204231660 is a wasteful number, since it uses less digits than its factorization.

204231660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 204231660 is about 14290.9642781724. The cubic root of 204231660 is about 588.8992787745.

The spelling of 204231660 in words is "two hundred four million, two hundred thirty-one thousand, six hundred sixty".