Base | Representation |
---|---|
bin | 111111111111010111… |
… | …111011111011010100 |
3 | 20120100110001112112122 |
4 | 333333113323323110 |
5 | 2111203444134132 |
6 | 51321531435112 |
7 | 4651446434210 |
oct | 777727737324 |
9 | 216313045478 |
10 | 68708974292 |
11 | 27159474382 |
12 | 113965b5a98 |
13 | 662cb3240a |
14 | 347b38d940 |
15 | 1bc20e4912 |
hex | fff5fbed4 |
68708974292 has 12 divisors (see below), whose sum is σ = 137417948640. Its totient is φ = 29446703256.
The previous prime is 68708974291. The next prime is 68708974309. The reversal of 68708974292 is 29247980786.
68708974292 is an admirable number.
It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68708974291) 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, 1226945942 + ... + 1226945997.
It is an arithmetic number, because the mean of its divisors is an integer number (11451495720).
Almost surely, 268708974292 is an apocalyptic number.
It is an amenable number.
68708974292 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68708974292 is a wasteful number, since it uses less digits than its factorization.
68708974292 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2453891950 (or 2453891948 counting only the distinct ones).
The product of its (nonzero) digits is 24385536, while the sum is 62.
The spelling of 68708974292 in words is "sixty-eight billion, seven hundred eight million, nine hundred seventy-four thousand, two hundred ninety-two".
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