204128170 has 8 divisors (see below), whose sum is σ = 367430724. Its totient is φ = 81651264.

The previous prime is 204128167. The next prime is 204128173. The reversal of 204128170 is 71821402.

It is a happy number.

204128170 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204128167) and next prime (204128173).

It can be written as a sum of positive squares in 2 ways, for example, as 204118369 + 9801 = 14287^2 + 99^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (204128173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10206399 + ... + 10206418.

Almost surely, 2^204128170 is an apocalyptic number.

204128170 is a deficient number, since it is larger than the sum of its proper divisors (163302554).

204128170 is a wasteful number, since it uses less digits than its factorization.

204128170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20412824.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 204128170 is about 14287.3430000123. The cubic root of 204128170 is about 588.7997912882.

Adding to 204128170 its reverse (71821402), we get a palindrome (275949572).

It can be divided in two parts, 20412 and 8170, that added together give a palindrome (28582).

The spelling of 204128170 in words is "two hundred four million, one hundred twenty-eight thousand, one hundred seventy".