28702 has 8 divisors (see below), whose sum is σ = 43776. Its totient is φ = 14112.

The previous prime is 28697. The next prime is 28703. The reversal of 28702 is 20782.

28702 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

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

28702 is an undulating number in base 15.

It is a nialpdrome in base 9 and base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 28702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28703) 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, 163 + ... + 289.

It is an arithmetic number, because the mean of its divisors is an integer number (5472).

2²⁸⁷⁰² is an apocalyptic number.

28702 is a deficient number, since it is larger than the sum of its proper divisors (15074).

28702 is a wasteful number, since it uses less digits than its factorization.

28702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 28702 is about 169.4166461715. The cubic root of 28702 is about 30.6175700426.

The spelling of 28702 in words is "twenty-eight thousand, seven hundred two".