28475285 has 8 divisors (see below), whose sum is σ = 34380960. Its totient is φ = 22639824.

The previous prime is 28475263. The next prime is 28475287. The reversal of 28475285 is 58257482.

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 28475285 - 2²⁴ = 11698069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28475287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16655 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (4297620).

Almost surely, 2^28475285 is an apocalyptic number.

It is an amenable number.

28475285 is a deficient number, since it is larger than the sum of its proper divisors (5905675).

28475285 is a wasteful number, since it uses less digits than its factorization.

28475285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35107.

The product of its digits is 179200, while the sum is 41.

The square root of 28475285 is about 5336.2238521261. The cubic root of 28475285 is about 305.3674153216.

The spelling of 28475285 in words is "twenty-eight million, four hundred seventy-five thousand, two hundred eighty-five".