2186144 has 24 divisors (see below), whose sum is σ = 4388580. Its totient is φ = 1071616.

The previous prime is 2186141. The next prime is 2186189. The reversal of 2186144 is 4416812.

It can be written as a sum of positive squares in 2 ways, for example, as 2016400 + 169744 = 1420^2 + 412^2 .

It is not an unprimeable number, because it can be changed into a prime (2186141) 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, 1052 + ... + 2340.

2^2186144 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 2186144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194290).

2186144 is an abundant number, since it is smaller than the sum of its proper divisors (2202436).

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

2186144 is a wasteful number, since it uses less digits than its factorization.

2186144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1344 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 2186144 is about 1478.5614630444. The cubic root of 2186144 is about 129.7855240610.

The spelling of 2186144 in words is "two million, one hundred eighty-six thousand, one hundred forty-four".