30444213 has 12 divisors (see below), whose sum is σ = 42842688. Its totient is φ = 19227240.

The previous prime is 30444199. The next prime is 30444217. The reversal of 30444213 is 31244403.

It is not a de Polignac number, because 30444213 - 2¹² = 30440117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30444213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30444217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12973 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (3570224).

Almost surely, 2^30444213 is an apocalyptic number.

It is an amenable number.

30444213 is a deficient number, since it is larger than the sum of its proper divisors (12398475).

30444213 is a wasteful number, since it uses less digits than its factorization.

30444213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28152 (or 28133 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30444213 is about 5517.6274792704. The cubic root of 30444213 is about 312.2493794329.

Adding to 30444213 its reverse (31244403), we get a palindrome (61688616).

The spelling of 30444213 in words is "thirty million, four hundred forty-four thousand, two hundred thirteen".