28393854 has 8 divisors (see below), whose sum is σ = 56787720. Its totient is φ = 9464616.

The previous prime is 28393843. The next prime is 28393877. The reversal of 28393854 is 45839382.

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

28393854 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2366149 + ... + 2366160.

It is an arithmetic number, because the mean of its divisors is an integer number (7098465).

Almost surely, 2^28393854 is an apocalyptic number.

28393854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28393854 is a wasteful number, since it uses less digits than its factorization.

28393854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732314.

The product of its digits is 207360, while the sum is 42.

The square root of 28393854 is about 5328.5883684143. The cubic root of 28393854 is about 305.0760501927.

The spelling of 28393854 in words is "twenty-eight million, three hundred ninety-three thousand, eight hundred fifty-four".