2215168 has 36 divisors (see below), whose sum is σ = 4690980. Its totient is φ = 1040384.

The previous prime is 2215163. The next prime is 2215177. The reversal of 2215168 is 8615122.

It can be written as a sum of positive squares in 2 ways, for example, as 1763584 + 451584 = 1328^2 + 672^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4098 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (130305).

2^2215168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2345490).

2215168 is an abundant number, since it is smaller than the sum of its proper divisors (2475812).

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

2215168 is an equidigital number, since it uses as much as digits as its factorization.

2215168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 528 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 2215168 is about 1488.3440462474. The cubic root of 2215168 is about 130.3573599403.

It can be divided in two parts, 2 and 215168, that multiplied together give a square (430336 = 656²).

The spelling of 2215168 in words is "two million, two hundred fifteen thousand, one hundred sixty-eight".