Base | Representation |
---|---|
bin | 10111010010011… |
… | …100101100111000 |
3 | 1000020012020021021 |
4 | 113102130230320 |
5 | 1300010241440 |
6 | 102434152224 |
7 | 12452666251 |
oct | 2722345470 |
9 | 1006166237 |
10 | 390712120 |
11 | 190601887 |
12 | aaa22674 |
13 | 62c3bc06 |
14 | 39c67b28 |
15 | 2447b84a |
hex | 1749cb38 |
390712120 has 32 divisors (see below), whose sum is σ = 888174000. Its totient is φ = 154672128.
The previous prime is 390712103. The next prime is 390712123. The reversal of 390712120 is 21217093.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (390712123) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46470 + ... + 54229.
Almost surely, 2390712120 is an apocalyptic number.
It is an amenable number.
390712120 is an abundant number, since it is smaller than the sum of its proper divisors (497461880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
390712120 is a wasteful number, since it uses less digits than its factorization.
390712120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 100807 (or 100803 counting only the distinct ones).
The product of its (nonzero) digits is 756, while the sum is 25.
The square root of 390712120 is about 19766.4392342172. The cubic root of 390712120 is about 731.0587751377.
The spelling of 390712120 in words is "three hundred ninety million, seven hundred twelve thousand, one hundred twenty".
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