Base | Representation |
---|---|
bin | 10000101111001… |
… | …010111100000110 |
3 | 201120101011121011 |
4 | 100233022330012 |
5 | 1033341113110 |
6 | 43510312434 |
7 | 6646524616 |
oct | 2057127406 |
9 | 646334534 |
10 | 280801030 |
11 | 134560a74 |
12 | 7a05871a |
13 | 46238173 |
14 | 29416a46 |
15 | 199ba48a |
hex | 10bcaf06 |
280801030 has 32 divisors (see below), whose sum is σ = 518348160. Its totient is φ = 109472640.
The previous prime is 280801021. The next prime is 280801039. The reversal of 280801030 is 30108082.
It is an interprime number because it is at equal distance from previous prime (280801021) and next prime (280801039).
It is a junction number, because it is equal to n+sod(n) for n = 280800992 and 280801010.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (280801039) 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, 125320 + ... + 127540.
It is an arithmetic number, because the mean of its divisors is an integer number (16198380).
Almost surely, 2280801030 is an apocalyptic number.
280801030 is a deficient number, since it is larger than the sum of its proper divisors (237547130).
280801030 is a wasteful number, since it uses less digits than its factorization.
280801030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2544.
The product of its (nonzero) digits is 384, while the sum is 22.
The square root of 280801030 is about 16757.1187857579. The cubic root of 280801030 is about 654.8365305014.
The spelling of 280801030 in words is "two hundred eighty million, eight hundred one thousand, thirty".
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