Base | Representation |
---|---|
bin | 111011100110101… |
… | …011110100110000 |
3 | 2120200200002121120 |
4 | 323212223310300 |
5 | 4021444343340 |
6 | 243121222240 |
7 | 33531555222 |
oct | 7346536460 |
9 | 2520602546 |
10 | 999996720 |
11 | 473521378 |
12 | 23aa91980 |
13 | 12c238848 |
14 | 96b4a412 |
15 | 5cbd04d0 |
hex | 3b9abd30 |
999996720 has 80 divisors (see below), whose sum is σ = 3103134720. Its totient is φ = 266395392.
The previous prime is 999996709. The next prime is 999996727. The reversal of 999996720 is 27699999.
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 (60).
It is not an unprimeable number, because it can be changed into a prime (999996727) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374751 + ... + 377409.
It is an arithmetic number, because the mean of its divisors is an integer number (38789184).
Almost surely, 2999996720 is an apocalyptic number.
It is an amenable number.
999996720 is an abundant number, since it is smaller than the sum of its proper divisors (2103138000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999996720 is a wasteful number, since it uses less digits than its factorization.
999996720 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4242 (or 4236 counting only the distinct ones).
The product of its (nonzero) digits is 4960116, while the sum is 60.
The square root of 999996720 is about 31622.7247402876. The cubic root of 999996720 is about 999.9989066655.
The spelling of 999996720 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred twenty".
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