30630220 has 24 divisors (see below), whose sum is σ = 64555344. Its totient is φ = 12207936.

The previous prime is 30630167. The next prime is 30630221. The reversal of 30630220 is 2203603.

It is a junction number, because it is equal to n+sod(n) for n = 30630194 and 30630203.

It is not an unprimeable number, because it can be changed into a prime (30630221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (2689806).

Almost surely, 2^30630220 is an apocalyptic number.

It is an amenable number.

30630220 is an abundant number, since it is smaller than the sum of its proper divisors (33925124).

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

30630220 is a wasteful number, since it uses less digits than its factorization.

30630220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30630220 is about 5534.4575163244. The cubic root of 30630220 is about 312.8840121842.

Adding to 30630220 its reverse (2203603), we get a palindrome (32833823).

The spelling of 30630220 in words is "thirty million, six hundred thirty thousand, two hundred twenty".