30040444 has 24 divisors (see below), whose sum is σ = 63244160. Its totient is φ = 12196656.

The previous prime is 30040441. The next prime is 30040469. The reversal of 30040444 is 44404003.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27702 + ... + 28765.

Almost surely, 2^30040444 is an apocalyptic number.

It is an amenable number.

30040444 is an abundant number, since it is smaller than the sum of its proper divisors (33203716).

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

30040444 is a wasteful number, since it uses less digits than its factorization.

30040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56497 (or 56495 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 30040444 is about 5480.9163467435. The cubic root of 30040444 is about 310.8628200186.

Adding to 30040444 its reverse (44404003), we get a palindrome (74444447).

The spelling of 30040444 in words is "thirty million, forty thousand, four hundred forty-four".