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22648 = 2319149
BaseRepresentation
bin101100001111000
31011001211
411201320
51211043
6252504
7123013
oct54170
934054
1022648
111601a
1211134
13a402
14837a
156a9d
hex5878

22648 has 16 divisors (see below), whose sum is σ = 45000. Its totient is φ = 10656.

The previous prime is 22643. The next prime is 22651. The reversal of 22648 is 84622.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78 + ... + 226.

222648 is an apocalyptic number.

It is an amenable number.

22648 is a deficient number, since it is larger than the sum of its proper divisors (22352).

22648 is a wasteful number, since it uses less digits than its factorization.

22648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 170 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 22648 is about 150.4925247313. The cubic root of 22648 is about 28.2928448992.

The spelling of 22648 in words is "twenty-two thousand, six hundred forty-eight".

Divisors: 1 2 4 8 19 38 76 149 152 298 596 1192 2831 5662 11324 22648