30028518 has 24 divisors (see below), whose sum is σ = 70067088. Its totient is φ = 9239472.

The previous prime is 30028499. The next prime is 30028573. The reversal of 30028518 is 81582003.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30028491 and 30028500.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 63930 + ... + 64397.

It is an arithmetic number, because the mean of its divisors is an integer number (2919462).

Almost surely, 2^30028518 is an apocalyptic number.

30028518 is an abundant number, since it is smaller than the sum of its proper divisors (40038570).

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

30028518 is a wasteful number, since it uses less digits than its factorization.

30028518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128348 (or 128345 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 30028518 is about 5479.8282819811. The cubic root of 30028518 is about 310.8216772545.

The spelling of 30028518 in words is "thirty million, twenty-eight thousand, five hundred eighteen".