Base | Representation |
---|---|
bin | 1010011110011… |
… | …00100101000001 |
3 | 20010100020122121 |
4 | 11033030211001 |
5 | 134443313021 |
6 | 12415204241 |
7 | 2114611030 |
oct | 517144501 |
9 | 203306577 |
10 | 87869761 |
11 | 45666941 |
12 | 25516681 |
13 | 15287455 |
14 | b954717 |
15 | 7aaa741 |
hex | 53cc941 |
87869761 has 8 divisors (see below), whose sum is σ = 100612544. Its totient is φ = 75174480.
The previous prime is 87869759. The next prime is 87869767. The reversal of 87869761 is 16796878.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87869761 - 21 = 87869759 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 87869699 and 87869708.
It is not an unprimeable number, because it can be changed into a prime (87869767) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7815 + ... + 15388.
It is an arithmetic number, because the mean of its divisors is an integer number (12576568).
Almost surely, 287869761 is an apocalyptic number.
It is an amenable number.
87869761 is a deficient number, since it is larger than the sum of its proper divisors (12742783).
87869761 is a wasteful number, since it uses less digits than its factorization.
87869761 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23751.
The product of its digits is 1016064, while the sum is 52.
The square root of 87869761 is about 9373.8871872879. The cubic root of 87869761 is about 444.5764787555.
The spelling of 87869761 in words is "eighty-seven million, eight hundred sixty-nine thousand, seven hundred sixty-one".
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