Base | Representation |
---|---|
bin | 1000010111000… |
… | …01111001000001 |
3 | 11212222001000021 |
4 | 10023201321001 |
5 | 120423200030 |
6 | 10543053441 |
7 | 1511051221 |
oct | 413417101 |
9 | 155861007 |
10 | 70131265 |
11 | 36650726 |
12 | 1b5a1281 |
13 | 116b64b9 |
14 | 9458081 |
15 | 625497a |
hex | 42e1e41 |
70131265 has 8 divisors (see below), whose sum is σ = 85171968. Its totient is φ = 55428720.
The previous prime is 70131263. The next prime is 70131283. The reversal of 70131265 is 56213107.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 70131265 - 21 = 70131263 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (70131263) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84081 + ... + 84910.
It is an arithmetic number, because the mean of its divisors is an integer number (10646496).
Almost surely, 270131265 is an apocalyptic number.
It is an amenable number.
70131265 is a deficient number, since it is larger than the sum of its proper divisors (15040703).
70131265 is a wasteful number, since it uses less digits than its factorization.
70131265 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 169079.
The product of its (nonzero) digits is 1260, while the sum is 25.
The square root of 70131265 is about 8374.4411753860. The cubic root of 70131265 is about 412.3859788929.
The spelling of 70131265 in words is "seventy million, one hundred thirty-one thousand, two hundred sixty-five".
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