Base | Representation |
---|---|
bin | 1000100000111… |
… | …10100011000111 |
3 | 11222101221012102 |
4 | 10100132203013 |
5 | 121241201140 |
6 | 11030542315 |
7 | 1525062521 |
oct | 420364307 |
9 | 158357172 |
10 | 71428295 |
11 | 37357154 |
12 | 1bb0799b |
13 | 11a4b983 |
14 | 96b4a11 |
15 | 640de15 |
hex | 441e8c7 |
71428295 has 4 divisors (see below), whose sum is σ = 85713960. Its totient is φ = 57142632.
The previous prime is 71428243. The next prime is 71428319. The reversal of 71428295 is 59282417.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59282417 = 17 ⋅3487201.
It is a cyclic number.
It is not a de Polignac number, because 71428295 - 28 = 71428039 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7142825 + ... + 7142834.
It is an arithmetic number, because the mean of its divisors is an integer number (21428490).
Almost surely, 271428295 is an apocalyptic number.
71428295 is a deficient number, since it is larger than the sum of its proper divisors (14285665).
71428295 is a wasteful number, since it uses less digits than its factorization.
71428295 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14285664.
The product of its digits is 40320, while the sum is 38.
The square root of 71428295 is about 8451.5261935345. The cubic root of 71428295 is about 414.9127314443.
The spelling of 71428295 in words is "seventy-one million, four hundred twenty-eight thousand, two hundred ninety-five".
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