28254856 has 32 divisors (see below), whose sum is σ = 63181440. Its totient is φ = 11582208.

The previous prime is 28254847. The next prime is 28254893. The reversal of 28254856 is 65845282.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9681 + ... + 12256.

It is an arithmetic number, because the mean of its divisors is an integer number (1974420).

Almost surely, 2^28254856 is an apocalyptic number.

It is an amenable number.

28254856 is an abundant number, since it is smaller than the sum of its proper divisors (34926584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28254856 is a wasteful number, since it uses less digits than its factorization.

28254856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21973 (or 21969 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 28254856 is about 5315.5297007918. The cubic root of 28254856 is about 304.5774171034.

The spelling of 28254856 in words is "twenty-eight million, two hundred fifty-four thousand, eight hundred fifty-six".