Base | Representation |
---|---|
bin | 101011110111… |
… | …1011010010100 |
3 | 1121021120001200 |
4 | 1113233122110 |
5 | 21342010344 |
6 | 2140552500 |
7 | 366334335 |
oct | 127573224 |
9 | 47246050 |
10 | 23000724 |
11 | 11a8a86a |
12 | 7852730 |
13 | 49c41c6 |
14 | 30aa28c |
15 | 2045069 |
hex | 15ef694 |
23000724 has 36 divisors (see below), whose sum is σ = 58714656. Its totient is φ = 7591248.
The previous prime is 23000723. The next prime is 23000749. The reversal of 23000724 is 42700032.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 23000697 and 23000706.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23000723) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607 + ... + 6809.
Almost surely, 223000724 is an apocalyptic number.
It is an amenable number.
23000724 is an abundant number, since it is smaller than the sum of its proper divisors (35713932).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23000724 is a wasteful number, since it uses less digits than its factorization.
23000724 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6316 (or 6311 counting only the distinct ones).
The product of its (nonzero) digits is 336, while the sum is 18.
The square root of 23000724 is about 4795.9070049366. The cubic root of 23000724 is about 284.3896819534.
Adding to 23000724 its reverse (42700032), we get a palindrome (65700756).
The spelling of 23000724 in words is "twenty-three million, seven hundred twenty-four", and thus it is an aban number.
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