204270 has 32 divisors (see below), whose sum is σ = 535680. Its totient is φ = 49440.

The previous prime is 204251. The next prime is 204299. The reversal of 204270 is 72402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 21 + ... + 639.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2²⁰⁴²⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267840).

204270 is an abundant number, since it is smaller than the sum of its proper divisors (331410).

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

204270 is a wasteful number, since it uses less digits than its factorization.

204270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 204270 is about 451.9623878156. The cubic root of 204270 is about 58.8936127429.

Multiplying 204270 by its sum of digits (15), we get a triangular number (3064050 = T₂₄₇₅).

Adding to 204270 its reverse (72402), we get a palindrome (276672).

It can be divided in two parts, 2042 and 70, that added together give a palindrome (2112).

The spelling of 204270 in words is "two hundred four thousand, two hundred seventy", and thus it is an iban number.