28909024 has 12 divisors (see below), whose sum is σ = 56914704. Its totient is φ = 14454496.

The previous prime is 28909021. The next prime is 28909031. The reversal of 28909024 is 42090982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28909021) 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 as a sum of consecutive naturals, namely, 451672 + ... + 451735.

It is an arithmetic number, because the mean of its divisors is an integer number (4742892).

Almost surely, 2^28909024 is an apocalyptic number.

It is an amenable number.

28909024 is a deficient number, since it is larger than the sum of its proper divisors (28005680).

28909024 is an equidigital number, since it uses as much as digits as its factorization.

28909024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903417 (or 903409 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28909024 is about 5376.7112624726. The cubic root of 28909024 is about 306.9100735032.

The spelling of 28909024 in words is "twenty-eight million, nine hundred nine thousand, twenty-four".