Base | Representation |
---|---|
bin | 10010111110110001… |
… | …000000001110010000 |
3 | 1221121100021220000020 |
4 | 102332301000032100 |
5 | 313214334324232 |
6 | 13210154223440 |
7 | 1321021265355 |
oct | 227661001620 |
9 | 57540256006 |
10 | 20380386192 |
11 | 8709218881 |
12 | 3b49424b80 |
13 | 1bca43c81a |
14 | db4a2262c |
15 | 7e4357e2c |
hex | 4bec40390 |
20380386192 has 20 divisors (see below), whose sum is σ = 52649331120. Its totient is φ = 6793462048.
The previous prime is 20380386179. The next prime is 20380386197. The reversal of 20380386192 is 29168308302.
It is not an unprimeable number, because it can be changed into a prime (20380386197) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212295642 + ... + 212295737.
It is an arithmetic number, because the mean of its divisors is an integer number (2632466556).
Almost surely, 220380386192 is an apocalyptic number.
It is an amenable number.
20380386192 is an abundant number, since it is smaller than the sum of its proper divisors (32268944928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20380386192 is a wasteful number, since it uses less digits than its factorization.
20380386192 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 424591390 (or 424591384 counting only the distinct ones).
The product of its (nonzero) digits is 124416, while the sum is 42.
The spelling of 20380386192 in words is "twenty billion, three hundred eighty million, three hundred eighty-six thousand, one hundred ninety-two".
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