3220290 has 32 divisors (see below), whose sum is σ = 8588160. Its totient is φ = 858672.

The previous prime is 3220289. The next prime is 3220297. The reversal of 3220290 is 920223.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3220297) 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, 5694 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (268380).

Almost surely, 2^3220290 is an apocalyptic number.

3220290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3220290 is an abundant number, since it is smaller than the sum of its proper divisors (5367870).

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

3220290 is a wasteful number, since it uses less digits than its factorization.

3220290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11943 (or 11937 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3220290 is about 1794.5166480142. The cubic root of 3220290 is about 147.6720581463.

The spelling of 3220290 in words is "three million, two hundred twenty thousand, two hundred ninety".