28295305 has 8 divisors (see below), whose sum is σ = 34013952. Its totient is φ = 22596528.

The previous prime is 28295299. The next prime is 28295321. The reversal of 28295305 is 50359282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28295305 - 2³ = 28295297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627 + ... + 7696.

It is an arithmetic number, because the mean of its divisors is an integer number (4251744).

Almost surely, 2^28295305 is an apocalyptic number.

It is an amenable number.

28295305 is a deficient number, since it is larger than the sum of its proper divisors (5718647).

28295305 is an equidigital number, since it uses as much as digits as its factorization.

28295305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 28295305 is about 5319.3331348958. Note that the first 3 decimals coincide. The cubic root of 28295305 is about 304.7226898037.

The spelling of 28295305 in words is "twenty-eight million, two hundred ninety-five thousand, three hundred five".