Base | Representation |
---|---|
bin | 110110111011… |
… | …1110101110011 |
3 | 2000012022111021 |
4 | 1231313311303 |
5 | 24333134134 |
6 | 2505200311 |
7 | 466550032 |
oct | 155676563 |
9 | 60168437 |
10 | 28802419 |
11 | 15292758 |
12 | 9790097 |
13 | 5c75b69 |
14 | 3b7a719 |
15 | 27de0b4 |
hex | 1b77d73 |
28802419 has 2 divisors, whose sum is σ = 28802420. Its totient is φ = 28802418.
The previous prime is 28802413. The next prime is 28802453. The reversal of 28802419 is 91420882.
It is an a-pointer prime, because the next prime (28802453) can be obtained adding 28802419 to its sum of digits (34).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 28802419 - 29 = 28801907 is a prime.
It is a super-2 number, since 2×288024192 = 1659158680503122, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (28802413) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14401209 + 14401210.
It is an arithmetic number, because the mean of its divisors is an integer number (14401210).
Almost surely, 228802419 is an apocalyptic number.
28802419 is a deficient number, since it is larger than the sum of its proper divisors (1).
28802419 is an equidigital number, since it uses as much as digits as its factorization.
28802419 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9216, while the sum is 34.
The square root of 28802419 is about 5366.7885182854. The cubic root of 28802419 is about 306.5323546733.
The spelling of 28802419 in words is "twenty-eight million, eight hundred two thousand, four hundred nineteen".
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