204670172 has 24 divisors (see below), whose sum is σ = 413101920. Its totient is φ = 86909760.

The previous prime is 204670171. The next prime is 204670177. The reversal of 204670172 is 271076402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204670171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30479 + ... + 36582.

It is an arithmetic number, because the mean of its divisors is an integer number (17212580).

Almost surely, 2^204670172 is an apocalyptic number.

It is an amenable number.

204670172 is an abundant number, since it is smaller than the sum of its proper divisors (208431748).

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

204670172 is a wasteful number, since it uses less digits than its factorization.

204670172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67181 (or 67179 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 204670172 is about 14306.2983332517. The cubic root of 204670172 is about 589.3204586512.

The spelling of 204670172 in words is "two hundred four million, six hundred seventy thousand, one hundred seventy-two".