Base | Representation |
---|---|
bin | 101001000111000110… |
… | …1101010010000000000 |
3 | 22102212202100111021212 |
4 | 1102032031222100000 |
5 | 2421302013312040 |
6 | 104320244105252 |
7 | 6243535411316 |
oct | 1221615522000 |
9 | 272782314255 |
10 | 88285291520 |
11 | 34494822248 |
12 | 1513a695228 |
13 | 842c7c5c8a |
14 | 43b72a80b6 |
15 | 246aa6ed65 |
hex | 148e36a400 |
88285291520 has 88 divisors (see below), whose sum is σ = 217505524344. Its totient is φ = 34359607296.
The previous prime is 88285291511. The next prime is 88285291541. The reversal of 88285291520 is 2519258288.
It can be written as a sum of positive squares in 4 ways, for example, as 3039978496 + 85245313024 = 55136^2 + 291968^2 .
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43577 + ... + 422456.
Almost surely, 288285291520 is an apocalyptic number.
88285291520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 88285291520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108752762172).
88285291520 is an abundant number, since it is smaller than the sum of its proper divisors (129220232824).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
88285291520 is a wasteful number, since it uses less digits than its factorization.
88285291520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 466095 (or 466077 counting only the distinct ones).
The product of its (nonzero) digits is 921600, while the sum is 50.
The spelling of 88285291520 in words is "eighty-eight billion, two hundred eighty-five million, two hundred ninety-one thousand, five hundred twenty".
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