Base | Representation |
---|---|
bin | 1100100000011111110… |
… | …0100101010110010010 |
3 | 202112122110210201011102 |
4 | 3020013330211112102 |
5 | 12010034202440210 |
6 | 242414300144402 |
7 | 21344653126241 |
oct | 3100774452622 |
9 | 675573721142 |
10 | 214881686930 |
11 | 83149123919 |
12 | 3578b538102 |
13 | 173564b20a1 |
14 | a586708958 |
15 | 58c9bb7ea5 |
hex | 3207f25592 |
214881686930 has 48 divisors (see below), whose sum is σ = 408802828824. Its totient is φ = 81311731200.
The previous prime is 214881686923. The next prime is 214881686933. The reversal of 214881686930 is 39686188412.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 178990763329 + 35890923601 = 423073^2 + 189449^2 .
It is not an unprimeable number, because it can be changed into a prime (214881686933) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2488154 + ... + 2573066.
Almost surely, 2214881686930 is an apocalyptic number.
214881686930 is a deficient number, since it is larger than the sum of its proper divisors (193921141894).
214881686930 is a wasteful number, since it uses less digits than its factorization.
214881686930 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 85659 (or 85640 counting only the distinct ones).
The product of its (nonzero) digits is 3981312, while the sum is 56.
The spelling of 214881686930 in words is "two hundred fourteen billion, eight hundred eighty-one million, six hundred eighty-six thousand, nine hundred thirty".
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