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22293 = 322477
BaseRepresentation
bin101011100010101
31010120200
411130111
51203133
6251113
7121665
oct53425
933520
1022293
1115827
1210a99
13a1bb
1481a5
156913
hex5715

22293 has 6 divisors (see below), whose sum is σ = 32214. Its totient is φ = 14856.

The previous prime is 22291. The next prime is 22303. The reversal of 22293 is 39222.

It can be written as a sum of positive squares in only one way, i.e., 19044 + 3249 = 138^2 + 57^2 .

It is not a de Polignac number, because 22293 - 21 = 22291 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1230 + ... + 1247.

It is an arithmetic number, because the mean of its divisors is an integer number (5369).

222293 is an apocalyptic number.

It is an amenable number.

22293 is a deficient number, since it is larger than the sum of its proper divisors (9921).

22293 is a wasteful number, since it uses less digits than its factorization.

22293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2480 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 22293 is about 149.3084056576. The cubic root of 22293 is about 28.1442386888.

It can be divided in two parts, 22 and 293, that multiplied together give a palindrome (6446).

The spelling of 22293 in words is "twenty-two thousand, two hundred ninety-three".

Divisors: 1 3 9 2477 7431 22293