305275028 has 12 divisors (see below), whose sum is σ = 536134452. Its totient is φ = 152093760.

The previous prime is 305275007. The next prime is 305275043. The reversal of 305275028 is 820572503.

It can be written as a sum of positive squares in 2 ways, for example, as 67436944 + 237838084 = 8212^2 + 15422^2 .

It is a junction number, because it is equal to n+sod(n) for n = 305274985 and 305275003.

It is a congruent number.

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, 134675 + ... + 136922.

It is an arithmetic number, because the mean of its divisors is an integer number (44677871).

Almost surely, 2^305275028 is an apocalyptic number.

It is an amenable number.

305275028 is a deficient number, since it is larger than the sum of its proper divisors (230859424).

305275028 is a wasteful number, since it uses less digits than its factorization.

305275028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271882 (or 271880 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 305275028 is about 17472.1214510431. The cubic root of 305275028 is about 673.3338168368. Note that the first 3 decimals are identical.

The spelling of 305275028 in words is "three hundred five million, two hundred seventy-five thousand, twenty-eight".