28858144 has 24 divisors (see below), whose sum is σ = 64931328. Its totient is φ = 12367680.

The previous prime is 28858133. The next prime is 28858157. The reversal of 28858144 is 44185882.

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 a junction number, because it is equal to n+sod(n) for n = 28858097 and 28858106.

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 3 ways as a sum of consecutive naturals, for example, 64192 + ... + 64639.

It is an arithmetic number, because the mean of its divisors is an integer number (2705472).

Almost surely, 2^28858144 is an apocalyptic number.

It is an amenable number.

28858144 is an abundant number, since it is smaller than the sum of its proper divisors (36073184).

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

28858144 is a wasteful number, since it uses less digits than its factorization.

28858144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128848 (or 128840 counting only the distinct ones).

The product of its digits is 81920, while the sum is 40.

The square root of 28858144 is about 5371.9776619044. The cubic root of 28858144 is about 306.7299134412.

The spelling of 28858144 in words is "twenty-eight million, eight hundred fifty-eight thousand, one hundred forty-four".