Base | Representation |
---|---|
bin | 111011100110101… |
… | …000101100110000 |
3 | 2120200122110001111 |
4 | 323212220230300 |
5 | 4021443441140 |
6 | 243121043104 |
7 | 33531503005 |
oct | 7346505460 |
9 | 2520573044 |
10 | 999983920 |
11 | 4735127a1 |
12 | 23aa86494 |
13 | 12c232a80 |
14 | 96b458ac |
15 | 5cbcb7ea |
hex | 3b9a8b30 |
999983920 has 160 divisors (see below), whose sum is σ = 2612332800. Its totient is φ = 353590272.
The previous prime is 999983893. The next prime is 999983921. The reversal of 999983920 is 29389999.
999983920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not an unprimeable number, because it can be changed into a prime (999983921) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2638291 + ... + 2638669.
It is an arithmetic number, because the mean of its divisors is an integer number (16327080).
Almost surely, 2999983920 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 999983920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306166400).
999983920 is an abundant number, since it is smaller than the sum of its proper divisors (1612348880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999983920 is a wasteful number, since it uses less digits than its factorization.
999983920 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 507 (or 501 counting only the distinct ones).
The product of its (nonzero) digits is 2834352, while the sum is 58.
The square root of 999983920 is about 31622.5223535378. The cubic root of 999983920 is about 999.9946399713.
The spelling of 999983920 in words is "nine hundred ninety-nine million, nine hundred eighty-three thousand, nine hundred twenty".
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