Base | Representation |
---|---|
bin | 10010101110001011… |
… | …110101110110111010 |
3 | 1220212221212000120120 |
4 | 102232023311312322 |
5 | 312132131141304 |
6 | 13122420034110 |
7 | 1311102646122 |
oct | 225613656672 |
9 | 56787760516 |
10 | 20102208954 |
11 | 858619a133 |
12 | 3a90232936 |
13 | 1b849129c9 |
14 | d89acdc82 |
15 | 7c9c0a0d9 |
hex | 4ae2f5dba |
20102208954 has 32 divisors (see below), whose sum is σ = 40943232000. Its totient is φ = 6577919664.
The previous prime is 20102208953. The next prime is 20102208983. The reversal of 20102208954 is 45980220102.
It is not an unprimeable number, because it can be changed into a prime (20102208953) 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, 215037 + ... + 294015.
It is an arithmetic number, because the mean of its divisors is an integer number (1279476000).
Almost surely, 220102208954 is an apocalyptic number.
20102208954 is an abundant number, since it is smaller than the sum of its proper divisors (20841023046).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20102208954 is a wasteful number, since it uses less digits than its factorization.
20102208954 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 79762.
The product of its (nonzero) digits is 11520, while the sum is 33.
The spelling of 20102208954 in words is "twenty billion, one hundred two million, two hundred eight thousand, nine hundred fifty-four".
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