Base | Representation |
---|---|
bin | 1000011110010011111100 |
3 | 11011212001200 |
4 | 20132103330 |
5 | 1032040213 |
6 | 115335500 |
7 | 24611055 |
oct | 10362374 |
9 | 4155050 |
10 | 2221308 |
11 | 12879a1 |
12 | 8b1590 |
13 | 5ca0ab |
14 | 41b72c |
15 | 2dd273 |
hex | 21e4fc |
2221308 has 18 divisors (see below), whose sum is σ = 5615064. Its totient is φ = 740424.
The previous prime is 2221301. The next prime is 2221321. The reversal of 2221308 is 8031222.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (18).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an Ulam number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2221301) 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, 30816 + ... + 30887.
It is an arithmetic number, because the mean of its divisors is an integer number (311948).
22221308 is an apocalyptic number.
It is an amenable number.
2221308 is an abundant number, since it is smaller than the sum of its proper divisors (3393756).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2221308 is a wasteful number, since it uses less digits than its factorization.
2221308 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61713 (or 61708 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
The square root of 2221308 is about 1490.4053140002. The cubic root of 2221308 is about 130.4776902894.
The spelling of 2221308 in words is "two million, two hundred twenty-one thousand, three hundred eight".
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