Base | Representation |
---|---|
bin | 110111001110… |
… | …1000010001001 |
3 | 2000111001110120 |
4 | 1232131002021 |
5 | 24403023021 |
6 | 2512333453 |
7 | 501053133 |
oct | 156350211 |
9 | 60431416 |
10 | 28954761 |
11 | 15387160 |
12 | 9844289 |
13 | 5cca2c4 |
14 | 3bba053 |
15 | 281e2c6 |
hex | 1b9d089 |
28954761 has 16 divisors (see below), whose sum is σ = 42225408. Its totient is φ = 17502800.
The previous prime is 28954753. The next prime is 28954763. The reversal of 28954761 is 16745982.
It is a cyclic number.
It is not a de Polignac number, because 28954761 - 23 = 28954753 is a prime.
It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is not an unprimeable number, because it can be changed into a prime (28954763) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15310 + ... + 17096.
It is an arithmetic number, because the mean of its divisors is an integer number (2639088).
Almost surely, 228954761 is an apocalyptic number.
It is an amenable number.
28954761 is a deficient number, since it is larger than the sum of its proper divisors (13270647).
28954761 is a wasteful number, since it uses less digits than its factorization.
28954761 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2292.
The product of its digits is 120960, while the sum is 42.
The square root of 28954761 is about 5380.9628320590. The cubic root of 28954761 is about 307.0718424812.
The spelling of 28954761 in words is "twenty-eight million, nine hundred fifty-four thousand, seven hundred sixty-one".
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