3220998 has 32 divisors (see below), whose sum is σ = 7223040. Its totient is φ = 948960.

The previous prime is 3220967. The next prime is 3221017. The reversal of 3220998 is 8990223.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1783 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (225720).

Almost surely, 2^3220998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3611520).

3220998 is an abundant number, since it is smaller than the sum of its proper divisors (4002042).

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

3220998 is a wasteful number, since it uses less digits than its factorization.

3220998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3220998 is about 1794.7139047770. The cubic root of 3220998 is about 147.6828795481.

Adding to 3220998 its reverse (8990223), we get a palindrome (12211221).

The spelling of 3220998 in words is "three million, two hundred twenty thousand, nine hundred ninety-eight".