Base | Representation |
---|---|
bin | 1000001100110… |
… | …10100000010000 |
3 | 11210102220112110 |
4 | 10012122200100 |
5 | 120102242123 |
6 | 10454225320 |
7 | 1463464530 |
oct | 406324020 |
9 | 153386473 |
10 | 68790288 |
11 | 35915186 |
12 | 1b055240 |
13 | 11337018 |
14 | 91c94c0 |
15 | 608c493 |
hex | 419a810 |
68790288 has 40 divisors (see below), whose sum is σ = 203096128. Its totient is φ = 19654272.
The previous prime is 68790269. The next prime is 68790329. The reversal of 68790288 is 88209786.
It is a happy number.
It is a super-3 number, since 3×687902883 (a number of 24 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (48).
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, 102031 + ... + 102702.
Almost surely, 268790288 is an apocalyptic number.
It is an amenable number.
68790288 is an abundant number, since it is smaller than the sum of its proper divisors (134305840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68790288 is a wasteful number, since it uses less digits than its factorization.
68790288 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 204751 (or 204745 counting only the distinct ones).
The product of its (nonzero) digits is 387072, while the sum is 48.
The square root of 68790288 is about 8293.9910778828. The cubic root of 68790288 is about 409.7406410449.
The spelling of 68790288 in words is "sixty-eight million, seven hundred ninety thousand, two hundred eighty-eight".
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