Base | Representation |
---|---|
bin | 101000111010101001… |
… | …1000011111001001111 |
3 | 22101210121210011000010 |
4 | 1101311103003321033 |
5 | 2414423010330004 |
6 | 104210552404303 |
7 | 6230301346614 |
oct | 1216523037117 |
9 | 271717704003 |
10 | 87867276879 |
11 | 3429a8726a8 |
12 | 150426a6693 |
13 | 8394017b35 |
14 | 437797450b |
15 | 2443eeda89 |
hex | 14754c3e4f |
87867276879 has 16 divisors (see below), whose sum is σ = 120527826048. Its totient is φ = 56897852832.
The previous prime is 87867276877. The next prime is 87867276919. The reversal of 87867276879 is 97867276878.
It is not a de Polignac number, because 87867276879 - 21 = 87867276877 is a prime.
It is a super-2 number, since 2×878672768792 (a number of 23 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 87867276879.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87867276877) 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, 609117 + ... + 739430.
It is an arithmetic number, because the mean of its divisors is an integer number (7532989128).
Almost surely, 287867276879 is an apocalyptic number.
87867276879 is a deficient number, since it is larger than the sum of its proper divisors (32660549169).
87867276879 is a wasteful number, since it uses less digits than its factorization.
87867276879 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1349174.
The product of its digits is 796594176, while the sum is 75.
Subtracting 87867276879 from its reverse (97867276878), we obtain a palindrome (9999999999).
The spelling of 87867276879 in words is "eighty-seven billion, eight hundred sixty-seven million, two hundred seventy-six thousand, eight hundred seventy-nine".
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