30120232 has 16 divisors (see below), whose sum is σ = 57677760. Its totient is φ = 14739504.

The previous prime is 30120221. The next prime is 30120239. The reversal of 30120232 is 23202103.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30120239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39678 + ... + 40429.

It is an arithmetic number, because the mean of its divisors is an integer number (3604860).

Almost surely, 2^30120232 is an apocalyptic number.

It is an amenable number.

30120232 is a deficient number, since it is larger than the sum of its proper divisors (27557528).

30120232 is a wasteful number, since it uses less digits than its factorization.

30120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80160 (or 80156 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30120232 is about 5488.1902299392. The cubic root of 30120232 is about 311.1377959348.

Adding to 30120232 its reverse (23202103), we get a palindrome (53322335).

The spelling of 30120232 in words is "thirty million, one hundred twenty thousand, two hundred thirty-two".