28726 has 8 divisors (see below), whose sum is σ = 44064. Its totient is φ = 14040.

The previous prime is 28723. The next prime is 28729. The reversal of 28726 is 62782.

It is an interprime number because it is at equal distance from previous prime (28723) and next prime (28729).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30 + ... + 241.

It is an arithmetic number, because the mean of its divisors is an integer number (5508).

2²⁸⁷²⁶ is an apocalyptic number.

28726 is a deficient number, since it is larger than the sum of its proper divisors (15338).

28726 is a wasteful number, since it uses less digits than its factorization.

28726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326.

The product of its digits is 1344, while the sum is 25.

The square root of 28726 is about 169.4874626632. The cubic root of 28726 is about 30.6261015847.

It can be divided in two parts, 287 and 26, that added together give a palindrome (313).

The spelling of 28726 in words is "twenty-eight thousand, seven hundred twenty-six".