2186285 has 16 divisors (see below), whose sum is σ = 2818800. Its totient is φ = 1627648.

The previous prime is 2186269. The next prime is 2186287. The reversal of 2186285 is 5826812.

It can be written as a sum of positive squares in 8 ways, for example, as 75076 + 2111209 = 274^2 + 1453^2 .

It is not a de Polignac number, because 2186285 - 2⁴ = 2186269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24521 + ... + 24609.

It is an arithmetic number, because the mean of its divisors is an integer number (176175).

2^2186285 is an apocalyptic number.

It is an amenable number.

2186285 is a deficient number, since it is larger than the sum of its proper divisors (632515).

2186285 is an frugal number, since it uses more digits than its factorization.

2186285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 111 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 2186285 is about 1478.6091437564. The cubic root of 2186285 is about 129.7883142654.

The spelling of 2186285 in words is "two million, one hundred eighty-six thousand, two hundred eighty-five".