28275605 has 8 divisors (see below), whose sum is σ = 34134912. Its totient is φ = 22484368.

The previous prime is 28275593. The next prime is 28275613. The reversal of 28275605 is 50657282.

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 28275605 - 2⁴ = 28275589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 16097 + ... + 17766.

It is an arithmetic number, because the mean of its divisors is an integer number (4266864).

Almost surely, 2^28275605 is an apocalyptic number.

It is an amenable number.

28275605 is a deficient number, since it is larger than the sum of its proper divisors (5859307).

28275605 is a wasteful number, since it uses less digits than its factorization.

28275605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34035.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 28275605 is about 5317.4810766001. The cubic root of 28275605 is about 304.6519545034.

The spelling of 28275605 in words is "twenty-eight million, two hundred seventy-five thousand, six hundred five".