Base | Representation |
---|---|
bin | 1000001100111… |
… | …01111000110111 |
3 | 11210110121112220 |
4 | 10012131320313 |
5 | 120103213101 |
6 | 10454413423 |
7 | 1463553123 |
oct | 406357067 |
9 | 153417486 |
10 | 68804151 |
11 | 35924639 |
12 | 1b061273 |
13 | 11340420 |
14 | 91d0583 |
15 | 6091636 |
hex | 419de37 |
68804151 has 32 divisors (see below), whose sum is σ = 105432768. Its totient is φ = 39536640.
The previous prime is 68804107. The next prime is 68804161. The reversal of 68804151 is 15140886.
It is not a de Polignac number, because 68804151 - 29 = 68803639 is a prime.
It is a super-2 number, since 2×688041512 = 9468022389661602, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68804161) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103761 + ... + 104421.
It is an arithmetic number, because the mean of its divisors is an integer number (3294774).
Almost surely, 268804151 is an apocalyptic number.
68804151 is a deficient number, since it is larger than the sum of its proper divisors (36628617).
68804151 is a wasteful number, since it uses less digits than its factorization.
68804151 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 851.
The product of its (nonzero) digits is 7680, while the sum is 33.
The square root of 68804151 is about 8294.8267613013. The cubic root of 68804151 is about 409.7681635976.
The spelling of 68804151 in words is "sixty-eight million, eight hundred four thousand, one hundred fifty-one".
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