Base | Representation |
---|---|
bin | 1010011111000… |
… | …11000111100001 |
3 | 20010111221021212 |
4 | 11033203013201 |
5 | 140004241311 |
6 | 12421155505 |
7 | 2115444134 |
oct | 517430741 |
9 | 203457255 |
10 | 87962081 |
11 | 4571a239 |
12 | 2555bb95 |
13 | 152ba48c |
14 | b97a21b |
15 | 7ac7c8b |
hex | 53e31e1 |
87962081 has 4 divisors (see below), whose sum is σ = 88012464. Its totient is φ = 87911700.
The previous prime is 87962059. The next prime is 87962093. The reversal of 87962081 is 18026978.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-87962081 is a prime.
It is a super-2 number, since 2×879620812 = 15474655387701122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (87967081) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22475 + ... + 26096.
It is an arithmetic number, because the mean of its divisors is an integer number (22003116).
Almost surely, 287962081 is an apocalyptic number.
It is an amenable number.
87962081 is a deficient number, since it is larger than the sum of its proper divisors (50383).
87962081 is a wasteful number, since it uses less digits than its factorization.
87962081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50382.
The product of its (nonzero) digits is 48384, while the sum is 41.
The square root of 87962081 is about 9378.8102123883. The cubic root of 87962081 is about 444.7321217376.
The spelling of 87962081 in words is "eighty-seven million, nine hundred sixty-two thousand, eighty-one".
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