Base | Representation |
---|---|
bin | 111011001101111… |
… | …0011100110101100 |
3 | 12010110220002121022 |
4 | 1312123303212230 |
5 | 13032133010443 |
6 | 525100153312 |
7 | 100145141045 |
oct | 16633634654 |
9 | 5113802538 |
10 | 1987000748 |
11 | 92a679087 |
12 | 475538838 |
13 | 2588755b5 |
14 | 14bc738cc |
15 | b9695e68 |
hex | 766f39ac |
1987000748 has 12 divisors (see below), whose sum is σ = 3479654640. Its totient is φ = 992813712.
The previous prime is 1987000723. The next prime is 1987000781. The reversal of 1987000748 is 8470007891.
It is a junction number, because it is equal to n+sod(n) for n = 1987000699 and 1987000708.
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 165128 + ... + 176751.
It is an arithmetic number, because the mean of its divisors is an integer number (289971220).
Almost surely, 21987000748 is an apocalyptic number.
It is an amenable number.
1987000748 is a deficient number, since it is larger than the sum of its proper divisors (1492653892).
1987000748 is a wasteful number, since it uses less digits than its factorization.
1987000748 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 343336 (or 343334 counting only the distinct ones).
The product of its (nonzero) digits is 112896, while the sum is 44.
The square root of 1987000748 is about 44575.7865662514. The cubic root of 1987000748 is about 1257.1854426272.
The spelling of 1987000748 in words is "one billion, nine hundred eighty-seven million, seven hundred forty-eight", and thus it is an aban number.
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