| Base | Representation |
|---|---|
| bin | 11001001100100… |
| … | …11110111100000 |
| 3 | 112201201200100210 |
| 4 | 30212103313200 |
| 5 | 413102310230 |
| 6 | 32550214120 |
| 7 | 5144416302 |
| oct | 1446236740 |
| 9 | 481650323 |
| 10 | 211369440 |
| 11 | a9348a97 |
| 12 | 5a954340 |
| 13 | 34a38299 |
| 14 | 20101972 |
| 15 | 13852eb0 |
| hex | c993de0 |
211369440 has 96 divisors (see below), whose sum is σ = 668697120. Its totient is φ = 56121344.
The previous prime is 211369373. The next prime is 211369441. The reversal of 211369440 is 44963112.
211369440 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 (96).
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a junction number, because it is equal to n+sod(n) for n = 211369398 and 211369407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (211369441) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128302 + ... + 129938.
It is an arithmetic number, because the mean of its divisors is an integer number (6965595).
Almost surely, 2211369440 is an apocalyptic number.
211369440 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 211369440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334348560).
211369440 is an abundant number, since it is smaller than the sum of its proper divisors (457327680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
211369440 is a wasteful number, since it uses less digits than its factorization.
211369440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1924 (or 1916 counting only the distinct ones).
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 211369440 is about 14538.5501340402. The cubic root of 211369440 is about 595.6814356901.
The spelling of 211369440 in words is "two hundred eleven million, three hundred sixty-nine thousand, four hundred forty".
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