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28270 = 2511257
BaseRepresentation
bin110111001101110
31102210001
412321232
51401040
6334514
7145264
oct67156
942701
1028270
111a270
121443a
13cb38
14a434
15859a
hex6e6e

28270 has 16 divisors (see below), whose sum is σ = 55728. Its totient is φ = 10240.

The previous prime is 28229. The next prime is 28277. The reversal of 28270 is 7282.

28270 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

28270 is an undulating number in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19 + ... + 238.

It is an arithmetic number, because the mean of its divisors is an integer number (3483).

228270 is an apocalyptic number.

28270 is a deficient number, since it is larger than the sum of its proper divisors (27458).

28270 is a wasteful number, since it uses less digits than its factorization.

28270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

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

The square root of 28270 is about 168.1368490248. The cubic root of 28270 is about 30.4631823050.

The spelling of 28270 in words is "twenty-eight thousand, two hundred seventy".

Divisors: 1 2 5 10 11 22 55 110 257 514 1285 2570 2827 5654 14135 28270