28545886 has 8 divisors (see below), whose sum is σ = 43458120. Its totient is φ = 14059848.

The previous prime is 28545859. The next prime is 28545887. The reversal of 28545886 is 68854582.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106381 + ... + 106648.

It is an arithmetic number, because the mean of its divisors is an integer number (5432265).

Almost surely, 2^28545886 is an apocalyptic number.

28545886 is a deficient number, since it is larger than the sum of its proper divisors (14912234).

28545886 is a wasteful number, since it uses less digits than its factorization.

28545886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213098.

The product of its digits is 614400, while the sum is 46.

The square root of 28545886 is about 5342.8350152330. The cubic root of 28545886 is about 305.6195807995.

The spelling of 28545886 in words is "twenty-eight million, five hundred forty-five thousand, eight hundred eighty-six".