30251028 has 24 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 10058560.

The previous prime is 30251017. The next prime is 30251047. The reversal of 30251028 is 82015203.

It is a junction number, because it is equal to n+sod(n) for n = 30250995 and 30251013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (2948400).

Almost surely, 2^30251028 is an apocalyptic number.

It is an amenable number.

30251028 is an abundant number, since it is smaller than the sum of its proper divisors (40510572).

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

30251028 is a wasteful number, since it uses less digits than its factorization.

30251028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287 (or 6285 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 30251028 is about 5500.0934537515. The cubic root of 30251028 is about 311.5875137469.

The spelling of 30251028 in words is "thirty million, two hundred fifty-one thousand, twenty-eight".