30004440 has 32 divisors (see below), whose sum is σ = 90013680. Its totient is φ = 8001152.

The previous prime is 30004433. The next prime is 30004441. The reversal of 30004440 is 4440003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30004441) 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, 124899 + ... + 125138.

Almost surely, 2^30004440 is an apocalyptic number.

30004440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30004440 is an abundant number, since it is smaller than the sum of its proper divisors (60009240).

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

30004440 is a wasteful number, since it uses less digits than its factorization.

30004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250051 (or 250047 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30004440 is about 5477.6308747487. The cubic root of 30004440 is about 310.7385788529.

Adding to 30004440 its reverse (4440003), we get a palindrome (34444443).

The spelling of 30004440 in words is "thirty million, four thousand, four hundred forty".