2215144 has 16 divisors (see below), whose sum is σ = 4169700. Its totient is φ = 1103232.

The previous prime is 2215141. The next prime is 2215159. The reversal of 2215144 is 4415122.

It can be written as a sum of positive squares in 2 ways, for example, as 1512900 + 702244 = 1230^2 + 838^2 .

It is not an unprimeable number, because it can be changed into a prime (2215141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934 + ... + 3610.

2^2215144 is an apocalyptic number.

It is an amenable number.

2215144 is a deficient number, since it is larger than the sum of its proper divisors (1954556).

2215144 is a wasteful number, since it uses less digits than its factorization.

2215144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1088 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 2215144 is about 1488.3359835736. The cubic root of 2215144 is about 130.3568891577.

The spelling of 2215144 in words is "two million, two hundred fifteen thousand, one hundred forty-four".