Base | Representation |
---|---|
bin | 11010011110001101… |
… | …010000101000101011 |
3 | 2201100220220212102120 |
4 | 122132031100220223 |
5 | 431203031024130 |
6 | 21020254402323 |
7 | 2024242456440 |
oct | 323615205053 |
9 | 81326825376 |
10 | 28424079915 |
11 | 11066719a40 |
12 | 56132003a3 |
13 | 28aca407ca |
14 | 15390219c7 |
15 | b155d4910 |
hex | 69e350a2b |
28424079915 has 64 divisors (see below), whose sum is σ = 57062016000. Its totient is φ = 11737290240.
The previous prime is 28424079907. The next prime is 28424079967. The reversal of 28424079915 is 51997042482.
It is not a de Polignac number, because 28424079915 - 23 = 28424079907 is a prime.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102961 + ... + 259709.
It is an arithmetic number, because the mean of its divisors is an integer number (891594000).
Almost surely, 228424079915 is an apocalyptic number.
28424079915 is an abundant number, since it is smaller than the sum of its proper divisors (28637936085).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28424079915 is a wasteful number, since it uses less digits than its factorization.
28424079915 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 156932.
The product of its (nonzero) digits is 1451520, while the sum is 51.
The spelling of 28424079915 in words is "twenty-eight billion, four hundred twenty-four million, seventy-nine thousand, nine hundred fifteen".
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