2205270 has 48 divisors (see below), whose sum is σ = 5812560. Its totient is φ = 580032.

The previous prime is 2205251. The next prime is 2205283. The reversal of 2205270 is 725022.

2205270 = T₁₀₉ + T₁₁₀ + ... + T₂₄₃.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9516 + ... + 9744.

It is an arithmetic number, because the mean of its divisors is an integer number (121095).

2^2205270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2906280).

2205270 is an abundant number, since it is smaller than the sum of its proper divisors (3607290).

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

2205270 is a wasteful number, since it uses less digits than its factorization.

2205270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 2205270 is about 1485.0151514379. The cubic root of 2205270 is about 130.1629121289.

It can be divided in two parts, 22052 and 70, that added together give a palindrome (22122).

The spelling of 2205270 in words is "two million, two hundred five thousand, two hundred seventy".