28854428 has 24 divisors (see below), whose sum is σ = 53243904. Its totient is φ = 13662000.

The previous prime is 28854401. The next prime is 28854473. The reversal of 28854428 is 82445882.

It is a congruent number.

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, 3353 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (2218496).

Almost surely, 2^28854428 is an apocalyptic number.

It is an amenable number.

28854428 is a deficient number, since it is larger than the sum of its proper divisors (24389476).

28854428 is a wasteful number, since it uses less digits than its factorization.

28854428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033 (or 5031 counting only the distinct ones).

The product of its digits is 163840, while the sum is 41.

The square root of 28854428 is about 5371.6317818704. The cubic root of 28854428 is about 306.7167472296.

The spelling of 28854428 in words is "twenty-eight million, eight hundred fifty-four thousand, four hundred twenty-eight".