28302930 has 48 divisors (see below), whose sum is σ = 75164544. Its totient is φ = 7385760.

The previous prime is 28302919. The next prime is 28302941. The reversal of 28302930 is 3920382.

It is an interprime number because it is at equal distance from previous prime (28302919) and next prime (28302941).

It is a junction number, because it is equal to n+sod(n) for n = 28302894 and 28302903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 885 + ... + 7575.

It is an arithmetic number, because the mean of its divisors is an integer number (1565928).

Almost surely, 2^28302930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28302930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37582272).

28302930 is an abundant number, since it is smaller than the sum of its proper divisors (46861614).

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

28302930 is a wasteful number, since it uses less digits than its factorization.

28302930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751 (or 6748 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 28302930 is about 5320.0498117969. The cubic root of 28302930 is about 304.7500595013.

The spelling of 28302930 in words is "twenty-eight million, three hundred two thousand, nine hundred thirty".