Base | Representation |
---|---|
bin | 1000010000000110… |
… | …0011011111001000 |
3 | 12201100220122210100 |
4 | 2010001203133020 |
5 | 14014020000013 |
6 | 1003443045400 |
7 | 105614121654 |
oct | 20401433710 |
9 | 5640818710 |
10 | 2215000008 |
11 | a37345321 |
12 | 519970860 |
13 | 293b83cc0 |
14 | 170263a64 |
15 | ce6d1473 |
hex | 840637c8 |
2215000008 has 48 divisors (see below), whose sum is σ = 6460419420. Its totient is φ = 681538176.
The previous prime is 2214999959. The next prime is 2215000061. The reversal of 2215000008 is 8000005122.
It can be written as a sum of positive squares in 2 ways, for example, as 2214455364 + 544644 = 47058^2 + 738^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182291 + ... + 1184162.
Almost surely, 22215000008 is an apocalyptic number.
It is an amenable number.
2215000008 is an abundant number, since it is smaller than the sum of its proper divisors (4245419412).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2215000008 is a wasteful number, since it uses less digits than its factorization.
2215000008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2366478 (or 2366471 counting only the distinct ones).
The product of its (nonzero) digits is 160, while the sum is 18.
The square root of 2215000008 is about 47063.7865879914. The cubic root of 2215000008 is about 1303.5406454733.
The spelling of 2215000008 in words is "two billion, two hundred fifteen million, eight", and thus it is an aban number.
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