Base | Representation |
---|---|
bin | 100100001111010111… |
… | …111010000011001011 |
3 | 10201102212222110122002 |
4 | 210033113322003023 |
5 | 1114143113142422 |
6 | 25513132421215 |
7 | 2545201622516 |
oct | 441727720313 |
9 | 121385873562 |
10 | 38912630987 |
11 | 1555919066a |
12 | 765b91780b |
13 | 3891a04b49 |
14 | 1c51dd9d7d |
15 | 102b2e8692 |
hex | 90f5fa0cb |
38912630987 has 8 divisors (see below), whose sum is σ = 39068239056. Its totient is φ = 38757210912.
The previous prime is 38912630951. The next prime is 38912631059. The reversal of 38912630987 is 78903621983.
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 38912630987 - 26 = 38912630923 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (38912630587) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375353 + ... + 467669.
It is an arithmetic number, because the mean of its divisors is an integer number (4883529882).
Almost surely, 238912630987 is an apocalyptic number.
38912630987 is a deficient number, since it is larger than the sum of its proper divisors (155608069).
38912630987 is a wasteful number, since it uses less digits than its factorization.
38912630987 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 93997.
The product of its (nonzero) digits is 3919104, while the sum is 56.
The spelling of 38912630987 in words is "thirty-eight billion, nine hundred twelve million, six hundred thirty thousand, nine hundred eighty-seven".
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