2272170 has 64 divisors (see below), whose sum is σ = 5909760. Its totient is φ = 557568.

The previous prime is 2272141. The next prime is 2272177. The reversal of 2272170 is 712722.

2272170 = T₁₈₀ + T₁₈₁ + ... + T₂₆₈.

2272170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2272177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25486 + ... + 25574.

It is an arithmetic number, because the mean of its divisors is an integer number (92340).

2^2272170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2272170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2954880).

2272170 is an abundant number, since it is smaller than the sum of its proper divisors (3637590).

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

2272170 is a wasteful number, since it uses less digits than its factorization.

2272170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2272170 is about 1507.3718851033. The cubic root of 2272170 is about 131.4660478013.

Adding to 2272170 its reverse (712722), we get a palindrome (2984892).

It can be divided in two parts, 22721 and 70, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 2272170 in words is "two million, two hundred seventy-two thousand, one hundred seventy".