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22285 = 54457
BaseRepresentation
bin101011100001101
31010120101
411130031
51203120
6251101
7121654
oct53415
933511
1022285
111581a
1210a91
13a1b3
14819b
15690a
hex570d

22285 has 4 divisors (see below), whose sum is σ = 26748. Its totient is φ = 17824.

The previous prime is 22283. The next prime is 22291. The reversal of 22285 is 58222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11881 + 10404 = 109^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 22285 - 21 = 22283 is a prime.

It is a d-powerful number, because it can be written as 22 + 211 + 212 + 83 + 56 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22283) 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, 2224 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (6687).

222285 is an apocalyptic number.

It is an amenable number.

22285 is a deficient number, since it is larger than the sum of its proper divisors (4463).

22285 is an equidigital number, since it uses as much as digits as its factorization.

22285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462.

The product of its digits is 320, while the sum is 19.

The square root of 22285 is about 149.2816130674. The cubic root of 22285 is about 28.1408716999.

Subtracting 22285 from its reverse (58222), we obtain a cube (35937 = 333).

The spelling of 22285 in words is "twenty-two thousand, two hundred eighty-five".

Divisors: 1 5 4457 22285