30028968 has 112 divisors (see below), whose sum is σ = 89188800. Its totient is φ = 9447840.

The previous prime is 30028967. The next prime is 30028979. The reversal of 30028968 is 86982003.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30028963) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 110673 + ... + 110943.

Almost surely, 2^30028968 is an apocalyptic number.

30028968 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30028968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44594400).

30028968 is an abundant number, since it is smaller than the sum of its proper divisors (59159832).

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

30028968 is a wasteful number, since it uses less digits than its factorization.

30028968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30028968 is about 5479.8693415081. The cubic root of 30028968 is about 310.8232298792.

The spelling of 30028968 in words is "thirty million, twenty-eight thousand, nine hundred sixty-eight".