28025824 has 24 divisors (see below), whose sum is σ = 55293840. Its totient is φ = 13982976.

The previous prime is 28025821. The next prime is 28025831. The reversal of 28025824 is 42852082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025821) by changing a digit.

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, 28932 + ... + 29884.

It is an arithmetic number, because the mean of its divisors is an integer number (2303910).

Almost surely, 2^28025824 is an apocalyptic number.

It is an amenable number.

28025824 is a deficient number, since it is larger than the sum of its proper divisors (27268016).

28025824 is an equidigital number, since it uses as much as digits as its factorization.

28025824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28025824 is about 5293.9421984000. The cubic root of 28025824 is about 303.7522219237.

The spelling of 28025824 in words is "twenty-eight million, twenty-five thousand, eight hundred twenty-four".