Base | Representation |
---|---|
bin | 1000011011111001110000 |
3 | 11011100112012 |
4 | 20123321300 |
5 | 1031231230 |
6 | 115222052 |
7 | 24540230 |
oct | 10337160 |
9 | 4140465 |
10 | 2211440 |
11 | 1280540 |
12 | 8a7928 |
13 | 5c575a |
14 | 417cc0 |
15 | 2da395 |
hex | 21be70 |
2211440 has 80 divisors (see below), whose sum is σ = 6428160. Its totient is φ = 687360.
The previous prime is 2211439. The next prime is 2211481. The reversal of 2211440 is 441122.
2211440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (14).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5981 + ... + 6339.
It is an arithmetic number, because the mean of its divisors is an integer number (80352).
22211440 is an apocalyptic number.
2211440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2211440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214080).
2211440 is an abundant number, since it is smaller than the sum of its proper divisors (4216720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2211440 is a wasteful number, since it uses less digits than its factorization.
2211440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 390 (or 384 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 14.
The square root of 2211440 is about 1487.0911202747. The cubic root of 2211440 is about 130.2841909054.
Adding to 2211440 its reverse (441122), we get a palindrome (2652562).
It can be divided in two parts, 221 and 1440, that added together give a palindrome (1661).
The spelling of 2211440 in words is "two million, two hundred eleven thousand, four hundred forty".
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