Base | Representation |
---|---|
bin | 101100010100… |
… | …1100101000100 |
3 | 1121201122212222 |
4 | 1120221211010 |
5 | 21422121410 |
6 | 2150031512 |
7 | 401346062 |
oct | 130514504 |
9 | 47648788 |
10 | 23238980 |
11 | 12132876 |
12 | 7948598 |
13 | 4a7879b |
14 | 312d032 |
15 | 2090955 |
hex | 1629944 |
23238980 has 12 divisors (see below), whose sum is σ = 48801900. Its totient is φ = 9295584.
The previous prime is 23238977. The next prime is 23239001. The reversal of 23238980 is 8983232.
It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 16777216 = 2542^2 + 4096^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 23238980.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580955 + ... + 580994.
It is an arithmetic number, because the mean of its divisors is an integer number (4066825).
Almost surely, 223238980 is an apocalyptic number.
23238980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
23238980 is an abundant number, since it is smaller than the sum of its proper divisors (25562920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23238980 is a wasteful number, since it uses less digits than its factorization.
23238980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1161958 (or 1161956 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 35.
The square root of 23238980 is about 4820.6825242905. The cubic root of 23238980 is about 285.3682732759.
The spelling of 23238980 in words is "twenty-three million, two hundred thirty-eight thousand, nine hundred eighty".
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