28604705 has 8 divisors (see below), whose sum is σ = 34739712. Its totient is φ = 22607728.

The previous prime is 28604699. The next prime is 28604729. The reversal of 28604705 is 50740682.

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 28604705 - 2²⁰ = 27556129 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, 34049 + ... + 34878.

It is an arithmetic number, because the mean of its divisors is an integer number (4342464).

Almost surely, 2^28604705 is an apocalyptic number.

It is an amenable number.

28604705 is a deficient number, since it is larger than the sum of its proper divisors (6135007).

28604705 is an equidigital number, since it uses as much as digits as its factorization.

28604705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69015.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 28604705 is about 5348.3366573169. The cubic root of 28604705 is about 305.8293472263.

The spelling of 28604705 in words is "twenty-eight million, six hundred four thousand, seven hundred five".