28331750 has 16 divisors (see below), whose sum is σ = 53037504. Its totient is φ = 11332600.

The previous prime is 28331747. The next prime is 28331759. The reversal of 28331750 is 5713382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331759) 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 7 ways as a sum of consecutive naturals, for example, 56414 + ... + 56913.

It is an arithmetic number, because the mean of its divisors is an integer number (3314844).

Almost surely, 2^28331750 is an apocalyptic number.

28331750 is a deficient number, since it is larger than the sum of its proper divisors (24705754).

28331750 is a wasteful number, since it uses less digits than its factorization.

28331750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113344 (or 113334 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 28331750 is about 5322.7577438768. The cubic root of 28331750 is about 304.8534636045.

The spelling of 28331750 in words is "twenty-eight million, three hundred thirty-one thousand, seven hundred fifty".