Base | Representation |
---|---|
bin | 11010110010000110111001 |
3 | 111012200222111 |
4 | 122302012321 |
5 | 3244132420 |
6 | 410252321 |
7 | 113451226 |
oct | 32620671 |
9 | 14180874 |
10 | 7020985 |
11 | 3a65a74 |
12 | 24270a1 |
13 | 15ba93a |
14 | d0a94d |
15 | 93a45a |
hex | 6b21b9 |
7020985 has 8 divisors (see below), whose sum is σ = 8443656. Its totient is φ = 5604480.
The previous prime is 7020971. The next prime is 7020991. The reversal of 7020985 is 5890207.
It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 6411024 = 781^2 + 2532^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 7020985 - 25 = 7020953 is a prime.
It is a Duffinian number.
7020985 is a lucky number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525 + ... + 4045.
It is an arithmetic number, because the mean of its divisors is an integer number (1055457).
Almost surely, 27020985 is an apocalyptic number.
It is an amenable number.
7020985 is a deficient number, since it is larger than the sum of its proper divisors (1422671).
7020985 is a wasteful number, since it uses less digits than its factorization.
7020985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3083.
The product of its (nonzero) digits is 5040, while the sum is 31.
The square root of 7020985 is about 2649.7141355248. The cubic root of 7020985 is about 191.4840840551.
The spelling of 7020985 in words is "seven million, twenty thousand, nine hundred eighty-five".
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