3215385 has 12 divisors (see below), whose sum is σ = 5573412. Its totient is φ = 1714848.

The previous prime is 3215383. The next prime is 3215417. The reversal of 3215385 is 5835123.

It can be written as a sum of positive squares in 2 ways, for example, as 1996569 + 1218816 = 1413^2 + 1104^2 .

It is not a de Polignac number, because 3215385 - 2¹ = 3215383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3215383) 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 11 ways as a sum of consecutive naturals, for example, 35682 + ... + 35771.

It is an arithmetic number, because the mean of its divisors is an integer number (464451).

Almost surely, 2^3215385 is an apocalyptic number.

It is an amenable number.

3215385 is a deficient number, since it is larger than the sum of its proper divisors (2358027).

3215385 is a wasteful number, since it uses less digits than its factorization.

3215385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71464 (or 71461 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 3215385 is about 1793.1494639321. The cubic root of 3215385 is about 147.5970442487.

It can be divided in two parts, 3215 and 385, that added together give a square (3600 = 60²).

The spelling of 3215385 in words is "three million, two hundred fifteen thousand, three hundred eighty-five".