Base | Representation |
---|---|
bin | 111111001110110110… |
… | …110010111101000100 |
3 | 20111020201101100212110 |
4 | 333032312302331010 |
5 | 2103022103333140 |
6 | 51105053021020 |
7 | 4622333545221 |
oct | 771666627504 |
9 | 214221340773 |
10 | 67894980420 |
11 | 26880a45773 |
12 | 111a9a84770 |
13 | 65302bcb37 |
14 | 3401220948 |
15 | 1b75906380 |
hex | fcedb2f44 |
67894980420 has 48 divisors (see below), whose sum is σ = 193328089920. Its totient is φ = 17798457216.
The previous prime is 67894980407. The next prime is 67894980431. The reversal of 67894980420 is 2408949876.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9586147 + ... + 9593226.
It is an arithmetic number, because the mean of its divisors is an integer number (4027668540).
Almost surely, 267894980420 is an apocalyptic number.
67894980420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
67894980420 is an abundant number, since it is smaller than the sum of its proper divisors (125433109500).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
67894980420 is a wasteful number, since it uses less digits than its factorization.
67894980420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19179444 (or 19179442 counting only the distinct ones).
The product of its (nonzero) digits is 6967296, while the sum is 57.
The spelling of 67894980420 in words is "sixty-seven billion, eight hundred ninety-four million, nine hundred eighty thousand, four hundred twenty".
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