Base | Representation |
---|---|
bin | 11010101111000001111101 |
3 | 111012001200200 |
4 | 122233001331 |
5 | 3243232011 |
6 | 410114113 |
7 | 113366412 |
oct | 32570175 |
9 | 14161620 |
10 | 7008381 |
11 | 3a57556 |
12 | 241b939 |
13 | 15b4c93 |
14 | d06109 |
15 | 936856 |
hex | 6af07d |
7008381 has 6 divisors (see below), whose sum is σ = 10123230. Its totient is φ = 4672248.
The previous prime is 7008361. The next prime is 7008413. The reversal of 7008381 is 1838007.
It can be written as a sum of positive squares in only one way, i.e., 5405625 + 1602756 = 2325^2 + 1266^2 .
It is not a de Polignac number, because 7008381 - 26 = 7008317 is a prime.
It is a super-2 number, since 2×70083812 = 98234808482322, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7008341) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389346 + ... + 389363.
It is an arithmetic number, because the mean of its divisors is an integer number (1687205).
Almost surely, 27008381 is an apocalyptic number.
It is an amenable number.
7008381 is a deficient number, since it is larger than the sum of its proper divisors (3114849).
7008381 is a wasteful number, since it uses less digits than its factorization.
7008381 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 778715 (or 778712 counting only the distinct ones).
The product of its (nonzero) digits is 1344, while the sum is 27.
The square root of 7008381 is about 2647.3346973891. The cubic root of 7008381 is about 191.3694320015.
The spelling of 7008381 in words is "seven million, eight thousand, three hundred eighty-one".
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