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23175234 = 234294933
BaseRepresentation
bin101100001101…
…0000001000010
31121121102110000
41120122001002
521413101414
62144420430
7400662165
oct130320102
947542400
1023175234
1112099995
127917716
134a55774
143113adc
15207bb09
hex161a042

23175234 has 40 divisors (see below), whose sum is σ = 53731260. Its totient is φ = 7457184.

The previous prime is 23175227. The next prime is 23175239. The reversal of 23175234 is 43257132.

It can be written as a sum of positive squares in 2 ways, for example, as 23011209 + 164025 = 4797^2 + 405^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23175198 and 23175207.

It is not an unprimeable number, because it can be changed into a prime (23175239) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2232 + ... + 7164.

Almost surely, 223175234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23175234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26865630).

23175234 is an abundant number, since it is smaller than the sum of its proper divisors (30556026).

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

23175234 is a wasteful number, since it uses less digits than its factorization.

23175234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4967 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23175234 is about 4814.0662646042. The cubic root of 23175234 is about 285.1071065574.

It can be divided in two parts, 23175 and 234, that added together give a square (23409 = 1532).

The spelling of 23175234 in words is "twenty-three million, one hundred seventy-five thousand, two hundred thirty-four".

Divisors: 1 2 3 6 9 18 27 29 54 58 81 87 162 174 261 522 783 1566 2349 4698 4933 9866 14799 29598 44397 88794 133191 143057 266382 286114 399573 429171 799146 858342 1287513 2575026 3862539 7725078 11587617 23175234