Base | Representation |
---|---|
bin | 101011111010… |
… | …0010101010000 |
3 | 1121022120201012 |
4 | 1113310111100 |
5 | 21343132010 |
6 | 2141230052 |
7 | 366450161 |
oct | 127642520 |
9 | 47276635 |
10 | 23020880 |
11 | 11aa3a23 |
12 | 7862328 |
13 | 4a0042c |
14 | 30b3768 |
15 | 204b005 |
hex | 15f4550 |
23020880 has 40 divisors (see below), whose sum is σ = 54184032. Its totient is φ = 9094784.
The previous prime is 23020859. The next prime is 23020883. The reversal of 23020880 is 8802032.
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23020883) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4907 + ... + 8373.
Almost surely, 223020880 is an apocalyptic number.
23020880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 23020880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27092016).
23020880 is an abundant number, since it is smaller than the sum of its proper divisors (31163152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23020880 is a wasteful number, since it uses less digits than its factorization.
23020880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3563 (or 3557 counting only the distinct ones).
The product of its (nonzero) digits is 768, while the sum is 23.
The square root of 23020880 is about 4798.0079199601. The cubic root of 23020880 is about 284.4727298442.
The spelling of 23020880 in words is "twenty-three million, twenty thousand, eight hundred eighty".
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