Base | Representation |
---|---|
bin | 1101011100111011… |
… | …10110111011000100 |
3 | 200122022112010201100 |
4 | 12232131312323010 |
5 | 104242314430040 |
6 | 3152345100100 |
7 | 343653146052 |
oct | 65635667304 |
9 | 20568463640 |
10 | 7222030020 |
11 | 3076714057 |
12 | 1496787630 |
13 | 8b130465a |
14 | 4c72351d2 |
15 | 2c4075b30 |
hex | 1ae776ec4 |
7222030020 has 36 divisors (see below), whose sum is σ = 21906824940. Its totient is φ = 1925874624.
The previous prime is 7222030009. The next prime is 7222030027. The reversal of 7222030020 is 200302227.
It can be written as a sum of positive squares in 2 ways, for example, as 4282655364 + 2939374656 = 65442^2 + 54216^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 7222029975 and 7222030002.
It is not an unprimeable number, because it can be changed into a prime (7222030027) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20061015 + ... + 20061374.
It is an arithmetic number, because the mean of its divisors is an integer number (608522915).
Almost surely, 27222030020 is an apocalyptic number.
It is an amenable number.
7222030020 is an abundant number, since it is smaller than the sum of its proper divisors (14684794920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7222030020 is a wasteful number, since it uses less digits than its factorization.
7222030020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40122404 (or 40122399 counting only the distinct ones).
The product of its (nonzero) digits is 336, while the sum is 18.
The square root of 7222030020 is about 84982.5277336465. The cubic root of 7222030020 is about 1932.9461853276.
Adding to 7222030020 its reverse (200302227), we get a palindrome (7422332247).
The spelling of 7222030020 in words is "seven billion, two hundred twenty-two million, thirty thousand, twenty".
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