30203220 has 48 divisors (see below), whose sum is σ = 89546688. Its totient is φ = 7580160.

The previous prime is 30203219. The next prime is 30203233. The reversal of 30203220 is 2230203.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30203196 and 30203205.

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, 13786 + ... + 15825.

It is an arithmetic number, because the mean of its divisors is an integer number (1865556).

Almost surely, 2^30203220 is an apocalyptic number.

30203220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30203220 is an abundant number, since it is smaller than the sum of its proper divisors (59343468).

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

30203220 is a wasteful number, since it uses less digits than its factorization.

30203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29640 (or 29638 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30203220 is about 5495.7456273012. The cubic root of 30203220 is about 311.4232853881.

Adding to 30203220 its reverse (2230203), we get a palindrome (32433423).

The spelling of 30203220 in words is "thirty million, two hundred three thousand, two hundred twenty".