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23656 = 232957
BaseRepresentation
bin101110001101000
31012110011
411301220
51224111
6301304
7125653
oct56150
935404
1023656
1116856
1211834
13a9c9
14889a
157021
hex5c68

23656 has 8 divisors (see below), whose sum is σ = 44370. Its totient is φ = 11824.

The previous prime is 23633. The next prime is 23663. The reversal of 23656 is 65632.

It can be divided in two parts, 236 and 56, that added together give a palindrome (292).

It can be written as a sum of positive squares in only one way, i.e., 22500 + 1156 = 150^2 + 34^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 14.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1471 + ... + 1486.

223656 is an apocalyptic number.

It is an amenable number.

23656 is a deficient number, since it is larger than the sum of its proper divisors (20714).

23656 is a wasteful number, since it uses less digits than its factorization.

23656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 23656 is about 153.8050714378. The cubic root of 23656 is about 28.7065127041.

The spelling of 23656 in words is "twenty-three thousand, six hundred fifty-six".

Divisors: 1 2 4 8 2957 5914 11828 23656