| Base | Representation |
|---|---|
| bin | 1001010011011… |
| … | …11100011001000 |
| 3 | 12102212102120100 |
| 4 | 10221233203020 |
| 5 | 124440122103 |
| 6 | 11424525400 |
| 7 | 1635266322 |
| oct | 451574310 |
| 9 | 172772510 |
| 10 | 78051528 |
| 11 | 400702a5 |
| 12 | 22180860 |
| 13 | 1322a549 |
| 14 | a51a612 |
| 15 | 6cbb5a3 |
| hex | 4a6f8c8 |
78051528 has 72 divisors (see below), whose sum is σ = 219100050. Its totient is φ = 25100544.
The previous prime is 78051509. The next prime is 78051529. The reversal of 78051528 is 82515087.
78051528 is a `hidden beast` number, since 7 + 80 + 51 + 528 = 666.
It can be written as a sum of positive squares in 3 ways, for example, as 74960964 + 3090564 = 8658^2 + 1758^2 .
It is a tau number, because it is divible by the number of its divisors (72).
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 78051492 and 78051501.
It is not an unprimeable number, because it can be changed into a prime (78051529) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 59908 + ... + 61196.
Almost surely, 278051528 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 78051528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109550025).
78051528 is an abundant number, since it is smaller than the sum of its proper divisors (141048522).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78051528 is a wasteful number, since it uses less digits than its factorization.
78051528 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1359 (or 1323 counting only the distinct ones).
The product of its (nonzero) digits is 22400, while the sum is 36.
The square root of 78051528 is about 8834.6775832511. The cubic root of 78051528 is about 427.3599335944.
The spelling of 78051528 in words is "seventy-eight million, fifty-one thousand, five hundred twenty-eight".
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