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28190 = 252819
BaseRepresentation
bin110111000011110
31102200002
412320132
51400230
6334302
7145121
oct67036
942602
1028190
111a1a8
1214392
13caa6
14a3b8
158545
hex6e1e

28190 has 8 divisors (see below), whose sum is σ = 50760. Its totient is φ = 11272.

The previous prime is 28183. The next prime is 28201. The reversal of 28190 is 9182.

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

It is a super-2 number, since 2×281902 = 1589352200, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (6345).

228190 is an apocalyptic number.

28190 is a deficient number, since it is larger than the sum of its proper divisors (22570).

28190 is a wasteful number, since it uses less digits than its factorization.

28190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 28190 is about 167.8987790307. The cubic root of 28190 is about 30.4344196940.

It can be divided in two parts, 2 and 8190, that added together give a 13-th power (8192 = 213).

The spelling of 28190 in words is "twenty-eight thousand, one hundred ninety".

Divisors: 1 2 5 10 2819 5638 14095 28190