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28222 = 2103137
BaseRepresentation
bin110111000111110
31102201021
412320332
51400342
6334354
7145165
oct67076
942637
1028222
111a227
12143ba
13cacc
14a3dc
158567
hex6e3e

28222 has 8 divisors (see below), whose sum is σ = 43056. Its totient is φ = 13872.

The previous prime is 28219. The next prime is 28229. The reversal of 28222 is 22282.

28222 is nontrivially palindromic in base 8.

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

28222 is a modest number, since divided by 222 gives 28 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 28196 and 28205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138 + ... + 274.

It is an arithmetic number, because the mean of its divisors is an integer number (5382).

228222 is an apocalyptic number.

28222 is a deficient number, since it is larger than the sum of its proper divisors (14834).

28222 is a wasteful number, since it uses less digits than its factorization.

28222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its digits is 128, while the sum is 16.

The square root of 28222 is about 167.9940475136. The cubic root of 28222 is about 30.4459312602.

It can be divided in two parts, 28 and 222, that multiplied together give a triangular number (6216 = T111).

The spelling of 28222 in words is "twenty-eight thousand, two hundred twenty-two".

Divisors: 1 2 103 137 206 274 14111 28222