30453220 has 48 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 10157184.

The previous prime is 30453209. The next prime is 30453223. The reversal of 30453220 is 2235403.

It is not an unprimeable number, because it can be changed into a prime (30453223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2241 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (1564080).

Almost surely, 2^30453220 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 30453220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37537920).

30453220 is an abundant number, since it is smaller than the sum of its proper divisors (44622620).

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

30453220 is a wasteful number, since it uses less digits than its factorization.

30453220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932 (or 5930 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30453220 is about 5518.4436211671. The cubic root of 30453220 is about 312.2801696617.

Adding to 30453220 its reverse (2235403), we get a palindrome (32688623).

The spelling of 30453220 in words is "thirty million, four hundred fifty-three thousand, two hundred twenty".