Base | Representation |
---|---|
bin | 1000001011100… |
… | …10110110101000 |
3 | 11210010122202100 |
4 | 10011302312220 |
5 | 120032043010 |
6 | 10450533400 |
7 | 1462220166 |
oct | 405626650 |
9 | 153118670 |
10 | 68627880 |
11 | 35814162 |
12 | 1ab97260 |
13 | 112ab119 |
14 | 9186236 |
15 | 60592c0 |
hex | 4172da8 |
68627880 has 48 divisors (see below), whose sum is σ = 223041780. Its totient is φ = 18300672.
The previous prime is 68627873. The next prime is 68627917. The reversal of 68627880 is 8872686.
It can be written as a sum of positive squares in 2 ways, for example, as 68260644 + 367236 = 8262^2 + 606^2 .
It is a Harshad number since it is a multiple of its sum of digits (45).
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94957 + ... + 95676.
Almost surely, 268627880 is an apocalyptic number.
68627880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
68627880 is an abundant number, since it is smaller than the sum of its proper divisors (154413900).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68627880 is a wasteful number, since it uses less digits than its factorization.
68627880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 190650 (or 190643 counting only the distinct ones).
The product of its (nonzero) digits is 258048, while the sum is 45.
The square root of 68627880 is about 8284.1945896991. The cubic root of 68627880 is about 409.4179327193.
The spelling of 68627880 in words is "sixty-eight million, six hundred twenty-seven thousand, eight hundred eighty".
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