Base | Representation |
---|---|
bin | 11010111101100011… |
… | …100010101000010111 |
3 | 2202201120120010000210 |
4 | 122331203202220113 |
5 | 433242200430422 |
6 | 21144403140503 |
7 | 2043260030412 |
oct | 327543425027 |
9 | 82646503023 |
10 | 28950014487 |
11 | 1130658a409 |
12 | 573b374733 |
13 | 29649a62b4 |
14 | 1588c08b79 |
15 | b4687210c |
hex | 6bd8e2a17 |
28950014487 has 16 divisors (see below), whose sum is σ = 40941774720. Its totient is φ = 18144640800.
The previous prime is 28950014477. The next prime is 28950014491. The reversal of 28950014487 is 78441005982.
It is a happy number.
It is not a de Polignac number, because 28950014487 - 215 = 28949981719 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28950014447) 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 15 ways as a sum of consecutive naturals, for example, 1931064 + ... + 1945997.
It is an arithmetic number, because the mean of its divisors is an integer number (2558860920).
Almost surely, 228950014487 is an apocalyptic number.
28950014487 is a deficient number, since it is larger than the sum of its proper divisors (11991760233).
28950014487 is a wasteful number, since it uses less digits than its factorization.
28950014487 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3877214.
The product of its (nonzero) digits is 645120, while the sum is 48.
The spelling of 28950014487 in words is "twenty-eight billion, nine hundred fifty million, fourteen thousand, four hundred eighty-seven".
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