30303220 has 24 divisors (see below), whose sum is σ = 63883008. Its totient is φ = 12074400.

The previous prime is 30303211. The next prime is 30303239. The reversal of 30303220 is 2230303.

It is a self number, because there is not a number n which added to its sum of digits gives 30303220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2625 + ... + 8215.

It is an arithmetic number, because the mean of its divisors is an integer number (2661792).

Almost surely, 2^30303220 is an apocalyptic number.

It is an amenable number.

30303220 is an abundant number, since it is smaller than the sum of its proper divisors (33579788).

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

30303220 is a wasteful number, since it uses less digits than its factorization.

30303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5871 (or 5869 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 30303220 is about 5504.8360556878. The cubic root of 30303220 is about 311.7666044321.

Adding to 30303220 its reverse (2230303), we get a palindrome (32533523).

The spelling of 30303220 in words is "thirty million, three hundred three thousand, two hundred twenty".