Base | Representation |
---|---|
bin | 101000100011001000… |
… | …0100010100110100110 |
3 | 22022202121210011010020 |
4 | 1101012100202212212 |
5 | 2411313442241303 |
6 | 104000401340010 |
7 | 6201606345663 |
oct | 1210620424646 |
9 | 268677704106 |
10 | 87078087078 |
11 | 33a25345724 |
12 | 14a62337606 |
13 | 829967b518 |
14 | 4300c20a6a |
15 | 23e9aaea53 |
hex | 14464229a6 |
87078087078 has 64 divisors (see below), whose sum is σ = 183836888064. Its totient is φ = 27442800000.
The previous prime is 87078086999. The next prime is 87078087119.
87078087078 is nontrivially palindromic in base 10.
It is a super-4 number, since 4×870780870784 (a number of 45 digits) contains 4444 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8789928 + ... + 8799828.
It is an arithmetic number, because the mean of its divisors is an integer number (2872451376).
Almost surely, 287078087078 is an apocalyptic number.
87078087078 is an abundant number, since it is smaller than the sum of its proper divisors (96758800986).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87078087078 is a wasteful number, since it uses less digits than its factorization.
87078087078 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10661.
The product of its (nonzero) digits is 9834496, while the sum is 60.
The spelling of 87078087078 in words is "eighty-seven billion, seventy-eight million, eighty-seven thousand, seventy-eight".
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