Base | Representation |
---|---|
bin | 101000101111001111… |
… | …1010111000110000100 |
3 | 22100210221202102200211 |
4 | 1101132133113012010 |
5 | 2413132031002114 |
6 | 104105003045204 |
7 | 6214644021400 |
oct | 1213637270604 |
9 | 270727672624 |
10 | 87484625284 |
11 | 34113876911 |
12 | 14b56510804 |
13 | 833296ba84 |
14 | 433cc08100 |
15 | 24206156c4 |
hex | 145e7d7184 |
87484625284 has 81 divisors (see below), whose sum is σ = 183358251909. Its totient is φ = 36416187360.
The previous prime is 87484625237. The next prime is 87484625287. The reversal of 87484625284 is 48252648478.
The square root of 87484625284 is 295778.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 78282444100 + 9202181184 = 279790^2 + 95928^2 .
It is a super-2 number, since 2×874846252842 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (87484625287) 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 26 ways as a sum of consecutive naturals, for example, 153212719 + ... + 153213289.
Almost surely, 287484625284 is an apocalyptic number.
87484625284 is the 295778-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 87484625284
87484625284 is an abundant number, since it is smaller than the sum of its proper divisors (95873626625).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87484625284 is an equidigital number, since it uses as much as digits as its factorization.
87484625284 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1234 (or 617 counting only the distinct ones).
The product of its digits is 27525120, while the sum is 58.
The spelling of 87484625284 in words is "eighty-seven billion, four hundred eighty-four million, six hundred twenty-five thousand, two hundred eighty-four".
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