2162280 has 64 divisors (see below), whose sum is σ = 6675840. Its totient is φ = 559872.

The previous prime is 2162273. The next prime is 2162297. The reversal of 2162280 is 822612.

2162280 = 2² + 3² + ... + 186².

2162280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4197 + ... + 4683.

It is an arithmetic number, because the mean of its divisors is an integer number (104310).

2^2162280 is an apocalyptic number.

2162280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2162280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3337920).

2162280 is an abundant number, since it is smaller than the sum of its proper divisors (4513560).

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

2162280 is a wasteful number, since it uses less digits than its factorization.

2162280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2162280 is about 1470.4693128386. The cubic root of 2162280 is about 129.3115479183.

Adding to 2162280 its reverse (822612), we get a palindrome (2984892).

It can be divided in two parts, 2162 and 280, that added together give a palindrome (2442).

The spelling of 2162280 in words is "two million, one hundred sixty-two thousand, two hundred eighty".