30223220 has 48 divisors (see below), whose sum is σ = 66407040. Its totient is φ = 11539584.

The previous prime is 30223211. The next prime is 30223261. The reversal of 30223220 is 2232203.

It is a junction number, because it is equal to n+sod(n) for n = 30223195 and 30223204.

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, 61817 + ... + 62303.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^30223220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33203520).

30223220 is an abundant number, since it is smaller than the sum of its proper divisors (36183820).

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

30223220 is a wasteful number, since it uses less digits than its factorization.

30223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30223220 is about 5497.5649154876. The cubic root of 30223220 is about 311.4920097539.

Adding to 30223220 its reverse (2232203), we get a palindrome (32455423).

The spelling of 30223220 in words is "thirty million, two hundred twenty-three thousand, two hundred twenty".