30220 has 12 divisors (see below), whose sum is σ = 63504. Its totient is φ = 12080.

The previous prime is 30211. The next prime is 30223. The reversal of 30220 is 2203.

It is not an unprimeable number, because it can be changed into a prime (30223) by changing a digit.

30220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 736 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (5292).

2³⁰²²⁰ is an apocalyptic number.

It is an amenable number.

30220 is an abundant number, since it is smaller than the sum of its proper divisors (33284).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31752).

30220 is a wasteful number, since it uses less digits than its factorization.

30220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 30220 is about 173.8390059797. The cubic root of 30220 is about 31.1480947179.

Adding to 30220 its reverse (2203), we get a palindrome (32423).

The spelling of 30220 in words is "thirty thousand, two hundred twenty".