3220287 has 16 divisors (see below), whose sum is σ = 4965120. Its totient is φ = 1818432.

The previous prime is 3220271. The next prime is 3220289. The reversal of 3220287 is 7820223.

It is not a de Polignac number, because 3220287 - 2⁴ = 3220271 is a prime.

3220287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220289) 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, 1008 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (310320).

Almost surely, 2^3220287 is an apocalyptic number.

3220287 is a deficient number, since it is larger than the sum of its proper divisors (1744833).

3220287 is a wasteful number, since it uses less digits than its factorization.

3220287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 3220287 is about 1794.5158121343. The cubic root of 3220287 is about 147.6720122895.

The spelling of 3220287 in words is "three million, two hundred twenty thousand, two hundred eighty-seven".