| Base | Representation |
|---|---|
| bin | 110110010000110… |
| … | …0011000110010000 |
| 3 | 11200220000212021200 |
| 4 | 1230201203012100 |
| 5 | 12212101440330 |
| 6 | 500400351200 |
| 7 | 63055660632 |
| oct | 15441430620 |
| 9 | 4626025250 |
| 10 | 1820733840 |
| 11 | 854836312 |
| 12 | 429915500 |
| 13 | 23029c503 |
| 14 | 133b52a52 |
| 15 | a9ca1a60 |
| hex | 6c863190 |
1820733840 has 120 divisors (see below), whose sum is σ = 6155492928. Its totient is φ = 482284800.
The previous prime is 1820733839. The next prime is 1820733841. The reversal of 1820733840 is 483370281.
It is an interprime number because it is at equal distance from previous prime (1820733839) and next prime (1820733841).
It is a tau number, because it is divible by the number of its divisors (120).
It is a super-2 number, since 2×18207338402 = 6630143432242291200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 1820733795 and 1820733804.
It is not an unprimeable number, because it can be changed into a prime (1820733841) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100347 + ... + 117093.
Almost surely, 21820733840 is an apocalyptic number.
1820733840 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 1820733840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3077746464).
1820733840 is an abundant number, since it is smaller than the sum of its proper divisors (4334759088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1820733840 is a wasteful number, since it uses less digits than its factorization.
1820733840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16917 (or 16908 counting only the distinct ones).
The product of its (nonzero) digits is 32256, while the sum is 36.
The square root of 1820733840 is about 42670.0578860634. The cubic root of 1820733840 is about 1221.0932241522.
The spelling of 1820733840 in words is "one billion, eight hundred twenty million, seven hundred thirty-three thousand, eight hundred forty".
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