28228485 has 8 divisors (see below), whose sum is σ = 45165600. Its totient is φ = 15055184.

The previous prime is 28228481. The next prime is 28228523. The reversal of 28228485 is 58482282.

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 28228485 - 2² = 28228481 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 (28228481) 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, 940935 + ... + 940964.

It is an arithmetic number, because the mean of its divisors is an integer number (5645700).

Almost surely, 2^28228485 is an apocalyptic number.

It is an amenable number.

28228485 is a deficient number, since it is larger than the sum of its proper divisors (16937115).

28228485 is a wasteful number, since it uses less digits than its factorization.

28228485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881907.

The product of its digits is 81920, while the sum is 39.

The square root of 28228485 is about 5313.0485599136. The cubic root of 28228485 is about 304.4826309047.

The spelling of 28228485 in words is "twenty-eight million, two hundred twenty-eight thousand, four hundred eighty-five".