30444072 has 32 divisors (see below), whose sum is σ = 77078400. Its totient is φ = 10018944.

The previous prime is 30444049. The next prime is 30444079. The reversal of 30444072 is 27044403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30444079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133 + ... + 9924.

It is an arithmetic number, because the mean of its divisors is an integer number (2408700).

Almost surely, 2^30444072 is an apocalyptic number.

It is an amenable number.

30444072 is an abundant number, since it is smaller than the sum of its proper divisors (46634328).

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

30444072 is a wasteful number, since it uses less digits than its factorization.

30444072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16145 (or 16141 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 30444072 is about 5517.6147020248. The cubic root of 30444072 is about 312.2488973793.

Adding to 30444072 its reverse (27044403), we get a palindrome (57488475).

The spelling of 30444072 in words is "thirty million, four hundred forty-four thousand, seventy-two".