30221244 has 36 divisors (see below), whose sum is σ = 76893544. Its totient is φ = 10007712.

The previous prime is 30221239. The next prime is 30221251. The reversal of 30221244 is 44212203.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2979 + ... + 8325.

Almost surely, 2^30221244 is an apocalyptic number.

It is an amenable number.

30221244 is an abundant number, since it is smaller than the sum of its proper divisors (46672300).

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

30221244 is a wasteful number, since it uses less digits than its factorization.

30221244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514 (or 5509 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30221244 is about 5497.3851966185. The cubic root of 30221244 is about 311.4852211366.

Adding to 30221244 its reverse (44212203), we get a palindrome (74433447).

The spelling of 30221244 in words is "thirty million, two hundred twenty-one thousand, two hundred forty-four".