28717734 has 16 divisors (see below), whose sum is σ = 58005360. Its totient is φ = 9477600.

The previous prime is 28717729. The next prime is 28717747. The reversal of 28717734 is 43771782.

It is a junction number, because it is equal to n+sod(n) for n = 28717692 and 28717701.

It is a congruent number.

It is an unprimeable number.

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, 23089 + ... + 24300.

It is an arithmetic number, because the mean of its divisors is an integer number (3625335).

Almost surely, 2^28717734 is an apocalyptic number.

28717734 is an abundant number, since it is smaller than the sum of its proper divisors (29287626).

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

28717734 is a wasteful number, since it uses less digits than its factorization.

28717734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47495.

The product of its digits is 65856, while the sum is 39.

The square root of 28717734 is about 5358.8929826971. The cubic root of 28717734 is about 306.2316371608.

The spelling of 28717734 in words is "twenty-eight million, seven hundred seventeen thousand, seven hundred thirty-four".