305305028 has 12 divisors (see below), whose sum is σ = 610610112. Its totient is φ = 130845000.

The previous prime is 305304971. The next prime is 305305043. The reversal of 305305028 is 820503503.

305305028 is an admirable number.

It is a super-2 number, since 2×305305028² = 186422320244161568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305304988 and 305305006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5451848 + ... + 5451903.

It is an arithmetic number, because the mean of its divisors is an integer number (50884176).

Almost surely, 2^305305028 is an apocalyptic number.

It is an amenable number.

305305028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

305305028 is a wasteful number, since it uses less digits than its factorization.

305305028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10903762 (or 10903760 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 305305028 is about 17472.9799404681. The cubic root of 305305028 is about 673.3558727437.

The spelling of 305305028 in words is "three hundred five million, three hundred five thousand, twenty-eight".