30004428 has 48 divisors (see below), whose sum is σ = 71618400. Its totient is φ = 9775104.

The previous prime is 30004423. The next prime is 30004433. The reversal of 30004428 is 82440003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30004423) and next prime (30004433).

30004428 is a modest number, since divided by 4428 gives 300 as remainder.

It is not an unprimeable number, because it can be changed into a prime (30004421) 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 15 ways as a sum of consecutive naturals, for example, 173350 + ... + 173522.

It is an arithmetic number, because the mean of its divisors is an integer number (1492050).

Almost surely, 2^30004428 is an apocalyptic number.

It is an amenable number.

30004428 is an abundant number, since it is smaller than the sum of its proper divisors (41613972).

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

30004428 is a wasteful number, since it uses less digits than its factorization.

30004428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 30004428 is about 5477.6297793845. The cubic root of 30004428 is about 310.7385374272.

The spelling of 30004428 in words is "thirty million, four thousand, four hundred twenty-eight".