Base | Representation |
---|---|
bin | 1000001001100… |
… | …01011101011100 |
3 | 11202122001022220 |
4 | 10010301131130 |
5 | 120000010103 |
6 | 10441105340 |
7 | 1460023242 |
oct | 404613534 |
9 | 152561286 |
10 | 68360028 |
11 | 356509a0 |
12 | 1aa88250 |
13 | 11216229 |
14 | 9116792 |
15 | 6004c53 |
hex | 413175c |
68360028 has 48 divisors (see below), whose sum is σ = 175585536. Its totient is φ = 20527360.
The previous prime is 68360003. The next prime is 68360029. The reversal of 68360028 is 82006386.
It is a Harshad number since it is a multiple of its sum of digits (33).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68360029) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12625 + ... + 17207.
It is an arithmetic number, because the mean of its divisors is an integer number (3658032).
Almost surely, 268360028 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68360028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87792768).
68360028 is an abundant number, since it is smaller than the sum of its proper divisors (107225508).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68360028 is a wasteful number, since it uses less digits than its factorization.
68360028 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4714 (or 4712 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 33.
The square root of 68360028 is about 8268.0123367107. The cubic root of 68360028 is about 408.8845907161.
The spelling of 68360028 in words is "sixty-eight million, three hundred sixty thousand, twenty-eight".
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