Base | Representation |
---|---|
bin | 1010011011100100… |
… | …1010101100101001 |
3 | 21020010200221020110 |
4 | 2212321022230221 |
5 | 21213300111011 |
6 | 1141501444533 |
7 | 126246432423 |
oct | 24671125451 |
9 | 7203627213 |
10 | 2800003881 |
11 | 12075903a4 |
12 | 661870749 |
13 | 35812bc3c |
14 | 1c7c25813 |
15 | 115c3aba6 |
hex | a6e4ab29 |
2800003881 has 8 divisors (see below), whose sum is σ = 3767589760. Its totient is φ = 1849543632.
The previous prime is 2800003879. The next prime is 2800003903. The reversal of 2800003881 is 1883000082.
2800003881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2800003881 - 21 = 2800003879 is a prime.
It is a super-2 number, since 2×28000038812 = 15680043467230124322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2800003081) 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, 4281025 + ... + 4281678.
It is an arithmetic number, because the mean of its divisors is an integer number (470948720).
Almost surely, 22800003881 is an apocalyptic number.
It is an amenable number.
2800003881 is a deficient number, since it is larger than the sum of its proper divisors (967585879).
2800003881 is a wasteful number, since it uses less digits than its factorization.
2800003881 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8562815.
The product of its (nonzero) digits is 3072, while the sum is 30.
The square root of 2800003881 is about 52915.0628932821. The cubic root of 2800003881 is about 1409.4603976166.
It can be divided in two parts, 280000 and 3881, that added together give a triangular number (283881 = T753).
The spelling of 2800003881 in words is "two billion, eight hundred million, three thousand, eight hundred eighty-one".
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