Base | Representation |
---|---|
bin | 11011100100101001111111 |
3 | 111121012222212 |
4 | 123210221333 |
5 | 3322244111 |
6 | 414531035 |
7 | 115302656 |
oct | 33445177 |
9 | 14535885 |
10 | 7228031 |
11 | 4097588 |
12 | 2506a7b |
13 | 1660c55 |
14 | d6219d |
15 | 97b98b |
hex | 6e4a7f |
7228031 has 4 divisors (see below), whose sum is σ = 7350600. Its totient is φ = 7105464.
The previous prime is 7228021. The next prime is 7228033. The reversal of 7228031 is 1308227.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1308227 = 127 ⋅10301.
It is a cyclic number.
It is not a de Polignac number, because 7228031 - 26 = 7227967 is a prime.
It is a super-2 number, since 2×72280312 = 104488864273922, which contains 22 as substring.
It is a Duffinian number.
It is a zygodrome in base 5.
It is a junction number, because it is equal to n+sod(n) for n = 7227988 and 7228006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7228033) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61196 + ... + 61313.
It is an arithmetic number, because the mean of its divisors is an integer number (1837650).
Almost surely, 27228031 is an apocalyptic number.
7228031 is a deficient number, since it is larger than the sum of its proper divisors (122569).
7228031 is a wasteful number, since it uses less digits than its factorization.
7228031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 122568.
The product of its (nonzero) digits is 672, while the sum is 23.
The square root of 7228031 is about 2688.4997675284. The cubic root of 7228031 is about 193.3481416191.
The spelling of 7228031 in words is "seven million, two hundred twenty-eight thousand, thirty-one".
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