30032220 has 48 divisors (see below), whose sum is σ = 84446208. Its totient is φ = 7974720.

The previous prime is 30032209. The next prime is 30032237. The reversal of 30032220 is 2223003.

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 = 30032196 and 30032205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15337 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (1759296).

Almost surely, 2^30032220 is an apocalyptic number.

30032220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30032220 is an abundant number, since it is smaller than the sum of its proper divisors (54413988).

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

30032220 is a wasteful number, since it uses less digits than its factorization.

30032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2128 counting only the distinct ones).

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

The square root of 30032220 is about 5480.1660558782. The cubic root of 30032220 is about 310.8344497193.

Adding to 30032220 its reverse (2223003), we get a palindrome (32255223).

The spelling of 30032220 in words is "thirty million, thirty-two thousand, two hundred twenty".