Base | Representation |
---|---|
bin | 100011101101110011… |
… | …010101110111101111 |
3 | 10122222122011020112002 |
4 | 203231303111313233 |
5 | 1112014421204422 |
6 | 25341212402515 |
7 | 2525222333402 |
oct | 435563256757 |
9 | 118878136462 |
10 | 38349397487 |
11 | 1529a264a35 |
12 | 752317643b |
13 | 380211009b |
14 | 1bdb2a3d39 |
15 | ee6b3e692 |
hex | 8edcd5def |
38349397487 has 16 divisors (see below), whose sum is σ = 40996005120. Its totient is φ = 35746701312.
The previous prime is 38349397481. The next prime is 38349397573. The reversal of 38349397487 is 78479394383.
It is not a de Polignac number, because 38349397487 - 26 = 38349397423 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 (38349397481) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757383 + ... + 2771255.
It is an arithmetic number, because the mean of its divisors is an integer number (2562250320).
Almost surely, 238349397487 is an apocalyptic number.
38349397487 is a deficient number, since it is larger than the sum of its proper divisors (2646607633).
38349397487 is a wasteful number, since it uses less digits than its factorization.
38349397487 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15442.
The product of its digits is 109734912, while the sum is 65.
The spelling of 38349397487 in words is "thirty-eight billion, three hundred forty-nine million, three hundred ninety-seven thousand, four hundred eighty-seven".
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