Base | Representation |
---|---|
bin | 10110110001000… |
… | …110001001101111 |
3 | 222121202000222021 |
4 | 112301012021233 |
5 | 1240241002012 |
6 | 101522531011 |
7 | 12315453160 |
oct | 2661061157 |
9 | 877660867 |
10 | 381969007 |
11 | 18667aa72 |
12 | a7b06a67 |
13 | 6119a484 |
14 | 38a2d767 |
15 | 23801007 |
hex | 16c4626f |
381969007 has 8 divisors (see below), whose sum is σ = 443692832. Its totient is φ = 322034400.
The previous prime is 381968969. The next prime is 381969017. The reversal of 381969007 is 700969183.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 381969007 - 27 = 381968879 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (381969017) 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, 446844 + ... + 447697.
It is an arithmetic number, because the mean of its divisors is an integer number (55461604).
Almost surely, 2381969007 is an apocalyptic number.
381969007 is a deficient number, since it is larger than the sum of its proper divisors (61723825).
381969007 is an equidigital number, since it uses as much as digits as its factorization.
381969007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 894609.
The product of its (nonzero) digits is 81648, while the sum is 43.
The square root of 381969007 is about 19544.0273996943. The cubic root of 381969007 is about 725.5645270979.
The spelling of 381969007 in words is "three hundred eighty-one million, nine hundred sixty-nine thousand, seven".
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