Base | Representation |
---|---|
bin | 1010011001111… |
… | …00111000110001 |
3 | 20002020100022002 |
4 | 11030330320301 |
5 | 134320444301 |
6 | 12354423345 |
7 | 2106610100 |
oct | 514747061 |
9 | 202210262 |
10 | 87281201 |
11 | 452a4727 |
12 | 25291b55 |
13 | 1510c5a7 |
14 | b840037 |
15 | 79e116b |
hex | 533ce31 |
87281201 has 12 divisors (see below), whose sum is σ = 102052800. Its totient is φ = 74428200.
The previous prime is 87281197. The next prime is 87281203. The reversal of 87281201 is 10218278.
It is not a de Polignac number, because 87281201 - 22 = 87281197 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (87281203) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5276 + ... + 14226.
It is an arithmetic number, because the mean of its divisors is an integer number (8504400).
Almost surely, 287281201 is an apocalyptic number.
It is an amenable number.
87281201 is a deficient number, since it is larger than the sum of its proper divisors (14771599).
87281201 is a wasteful number, since it uses less digits than its factorization.
87281201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9164 (or 9157 counting only the distinct ones).
The product of its (nonzero) digits is 1792, while the sum is 29.
The square root of 87281201 is about 9342.4408480868. The cubic root of 87281201 is about 443.5816491322.
Adding to 87281201 its reverse (10218278), we get a palindrome (97499479).
The spelling of 87281201 in words is "eighty-seven million, two hundred eighty-one thousand, two hundred one".
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