30221232 has 20 divisors (see below), whose sum is σ = 78071640. Its totient is φ = 10073728.

The previous prime is 30221209. The next prime is 30221239. The reversal of 30221232 is 23212203.

It is not an unprimeable number, because it can be changed into a prime (30221239) 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, 314757 + ... + 314852.

It is an arithmetic number, because the mean of its divisors is an integer number (3903582).

Almost surely, 2^30221232 is an apocalyptic number.

It is an amenable number.

30221232 is an abundant number, since it is smaller than the sum of its proper divisors (47850408).

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

30221232 is a wasteful number, since it uses less digits than its factorization.

30221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629620 (or 629614 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30221232 is about 5497.3841051904. The cubic root of 30221232 is about 311.4851799093.

Adding to 30221232 its reverse (23212203), we get a palindrome (53433435).

The spelling of 30221232 in words is "thirty million, two hundred twenty-one thousand, two hundred thirty-two".