Base | Representation |
---|---|
bin | 1011000110101110… |
… | …0111011011000010 |
3 | 21200202021112110200 |
4 | 2301223213123002 |
5 | 22101114012043 |
6 | 1211445110030 |
7 | 133605042501 |
oct | 26153473302 |
9 | 7622245420 |
10 | 2981000898 |
11 | 129a774107 |
12 | 6b23b8316 |
13 | 386791875 |
14 | 203c9c838 |
15 | 126a8e7d3 |
hex | b1ae76c2 |
2981000898 has 54 divisors (see below), whose sum is σ = 6870191211. Its totient is φ = 933980544.
The previous prime is 2981000879. The next prime is 2981000903. The reversal of 2981000898 is 8980001892.
It can be written as a sum of positive squares in 5 ways, for example, as 2589079689 + 391921209 = 50883^2 + 19797^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=38607.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3937536 + ... + 3938292.
Almost surely, 22981000898 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2981000898
2981000898 is an abundant number, since it is smaller than the sum of its proper divisors (3889190313).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2981000898 is an equidigital number, since it uses as much as digits as its factorization.
2981000898 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1556 (or 779 counting only the distinct ones).
The product of its (nonzero) digits is 82944, while the sum is 45.
The square root of 2981000898 is about 54598.5430025381. The cubic root of 2981000898 is about 1439.1985152139.
The spelling of 2981000898 in words is "two billion, nine hundred eighty-one million, eight hundred ninety-eight", and thus it is an aban number.
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