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23117148 = 22321933797
BaseRepresentation
bin101100000101…
…1110101011100
31121111110202200
41120023311130
521404222043
62143251500
7400330635
oct130136534
947443680
1023117148
111205a28a
1278a9b90
134a351b2
1430da88c
1520697d3
hex160bd5c

23117148 has 36 divisors (see below), whose sum is σ = 61512360. Its totient is φ = 7299936.

The previous prime is 23117141. The next prime is 23117179. The reversal of 23117148 is 84171132.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16215 + ... + 17582.

Almost surely, 223117148 is an apocalyptic number.

It is an amenable number.

23117148 is an abundant number, since it is smaller than the sum of its proper divisors (38395212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23117148 is a wasteful number, since it uses less digits than its factorization.

23117148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33826 (or 33821 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 23117148 is about 4808.0295340191. The cubic root of 23117148 is about 284.8687114595.

The spelling of 23117148 in words is "twenty-three million, one hundred seventeen thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 19 36 38 57 76 114 171 228 342 684 33797 67594 101391 135188 202782 304173 405564 608346 642143 1216692 1284286 1926429 2568572 3852858 5779287 7705716 11558574 23117148