30112220 has 12 divisors (see below), whose sum is σ = 63235704. Its totient is φ = 12044880.

The previous prime is 30112217. The next prime is 30112249. The reversal of 30112220 is 2221103.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752786 + ... + 752825.

It is an arithmetic number, because the mean of its divisors is an integer number (5269642).

Almost surely, 2^30112220 is an apocalyptic number.

It is an amenable number.

30112220 is an abundant number, since it is smaller than the sum of its proper divisors (33123484).

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

30112220 is a wasteful number, since it uses less digits than its factorization.

30112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505620 (or 1505618 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30112220 is about 5487.4602504255. The cubic root of 30112220 is about 311.1102058742.

Adding to 30112220 its reverse (2221103), we get a palindrome (32333323).

It can be divided in two parts, 301 and 12220, that added together give a palindrome (12521).

The spelling of 30112220 in words is "thirty million, one hundred twelve thousand, two hundred twenty".