Base | Representation |
---|---|
bin | 11001010000110000001100 |
3 | 110110102222102 |
4 | 121100300030 |
5 | 3143402340 |
6 | 353534232 |
7 | 110200523 |
oct | 31206014 |
9 | 13412872 |
10 | 6622220 |
11 | 3813410 |
12 | 2274378 |
13 | 14ab297 |
14 | c454ba |
15 | 8ac215 |
hex | 650c0c |
6622220 has 48 divisors (see below), whose sum is σ = 15676416. Its totient is φ = 2328000.
The previous prime is 6622211. The next prime is 6622283. The reversal of 6622220 is 222266.
6622220 = T127 + T128 + ... + T346.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a nialpdrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 6622192 and 6622201.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6335 + ... + 7305.
It is an arithmetic number, because the mean of its divisors is an integer number (326592).
Almost surely, 26622220 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6622220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7838208).
6622220 is an abundant number, since it is smaller than the sum of its proper divisors (9054196).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6622220 is a wasteful number, since it uses less digits than its factorization.
6622220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1022 (or 1020 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
The square root of 6622220 is about 2573.3674436427. The cubic root of 6622220 is about 187.7880136598.
Adding to 6622220 its reverse (222266), we get a palindrome (6844486).
It can be divided in two parts, 662 and 2220, that added together give a palindrome (2882).
The spelling of 6622220 in words is "six million, six hundred twenty-two thousand, two hundred twenty".
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