3172285 has 8 divisors (see below), whose sum is σ = 4030776. Its totient is φ = 2388480.

The previous prime is 3172277. The next prime is 3172289. The reversal of 3172285 is 5822713.

It can be written as a sum of positive squares in 4 ways, for example, as 1172889 + 1999396 = 1083^2 + 1414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3172285 - 2³ = 3172277 is a prime.

It is a Duffinian number.

3172285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18576 + ... + 18745.

It is an arithmetic number, because the mean of its divisors is an integer number (503847).

Almost surely, 2^3172285 is an apocalyptic number.

It is an amenable number.

3172285 is a deficient number, since it is larger than the sum of its proper divisors (858491).

3172285 is a wasteful number, since it uses less digits than its factorization.

3172285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37343.

The product of its digits is 3360, while the sum is 28.

The square root of 3172285 is about 1781.0909578121. The cubic root of 3172285 is about 146.9345969098.

Adding to 3172285 its reverse (5822713), we get a palindrome (8994998).

The spelling of 3172285 in words is "three million, one hundred seventy-two thousand, two hundred eighty-five".