28342 has 8 divisors (see below), whose sum is σ = 43776. Its totient is φ = 13752.

The previous prime is 28319. The next prime is 28349. The reversal of 28342 is 24382.

It is a happy number.

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

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28349) by changing a digit.

28342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118 + ... + 265.

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

2²⁸³⁴² is an apocalyptic number.

28342 is a deficient number, since it is larger than the sum of its proper divisors (15434).

28342 is a wasteful number, since it uses less digits than its factorization.

28342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its digits is 384, while the sum is 19.

The square root of 28342 is about 168.3508241738. The cubic root of 28342 is about 30.4890222968.

It can be divided in two parts, 283 and 42, that added together give a triangular number (325 = T₂₅).

The spelling of 28342 in words is "twenty-eight thousand, three hundred forty-two".