28910750 has 32 divisors (see below), whose sum is σ = 59046624. Its totient is φ = 10512000.

The previous prime is 28910743. The next prime is 28910759. The reversal of 28910750 is 5701982.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28910759) 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 15 ways as a sum of consecutive naturals, for example, 2507 + ... + 8006.

It is an arithmetic number, because the mean of its divisors is an integer number (1845207).

Almost surely, 2^28910750 is an apocalyptic number.

28910750 is an abundant number, since it is smaller than the sum of its proper divisors (30135874).

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

28910750 is a wasteful number, since it uses less digits than its factorization.

28910750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541 (or 10531 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 28910750 is about 5376.8717671152. The cubic root of 28910750 is about 306.9161813566.

The spelling of 28910750 in words is "twenty-eight million, nine hundred ten thousand, seven hundred fifty".