| Base | Representation |
|---|---|
| bin | 101101000110… |
| … | …001010101100 |
| 3 | 211020121101020 |
| 4 | 231012022230 |
| 5 | 11011243430 |
| 6 | 1101214140 |
| 7 | 202324500 |
| oct | 55061254 |
| 9 | 24217336 |
| 10 | 11821740 |
| 11 | 6744937 |
| 12 | 3b61350 |
| 13 | 25abb18 |
| 14 | 17da300 |
| 15 | 1087b10 |
| hex | b462ac |
11821740 has 72 divisors (see below), whose sum is σ = 38514672. Its totient is φ = 2701440.
The previous prime is 11821729. The next prime is 11821741. The reversal of 11821740 is 4712811.
It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.
It is a self number, because there is not a number n which added to its sum of digits gives 11821740.
It is not an unprimeable number, because it can be changed into a prime (11821741) by changing a digit.
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 23 ways as a sum of consecutive naturals, for example, 930 + ... + 4950.
It is an arithmetic number, because the mean of its divisors is an integer number (534926).
Almost surely, 211821740 is an apocalyptic number.
11821740 is a gapful number since it is divisible by the number (10) 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 11821740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19257336).
11821740 is an abundant number, since it is smaller than the sum of its proper divisors (26692932).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11821740 is a wasteful number, since it uses less digits than its factorization.
11821740 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4047 (or 4038 counting only the distinct ones).
The product of its (nonzero) digits is 448, while the sum is 24.
The square root of 11821740 is about 3438.2757306534. The cubic root of 11821740 is about 227.8035395984.
It can be divided in two parts, 11821 and 740, that added together give a triangular number (12561 = T158).
The spelling of 11821740 in words is "eleven million, eight hundred twenty-one thousand, seven hundred forty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •