Base | Representation |
---|---|
bin | 111111010101011111… |
… | …000110101011101000 |
3 | 20111112110200102112220 |
4 | 333111133012223220 |
5 | 2103234042212110 |
6 | 51124105034040 |
7 | 4625154151431 |
oct | 772537065350 |
9 | 214473612486 |
10 | 68006210280 |
11 | 26928807378 |
12 | 1121b185920 |
13 | 654a365c18 |
14 | 3411cd6488 |
15 | 1b80578370 |
hex | fd57c6ae8 |
68006210280 has 32 divisors (see below), whose sum is σ = 204018631200. Its totient is φ = 18134989376.
The previous prime is 68006210263. The next prime is 68006210291. The reversal of 68006210280 is 8201260086.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283359090 + ... + 283359329.
It is an arithmetic number, because the mean of its divisors is an integer number (6375582225).
Almost surely, 268006210280 is an apocalyptic number.
68006210280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
68006210280 is an abundant number, since it is smaller than the sum of its proper divisors (136012420920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68006210280 is a wasteful number, since it uses less digits than its factorization.
68006210280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 566718433 (or 566718429 counting only the distinct ones).
The product of its (nonzero) digits is 9216, while the sum is 33.
The spelling of 68006210280 in words is "sixty-eight billion, six million, two hundred ten thousand, two hundred eighty".
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