Base | Representation |
---|---|
bin | 101000100011010001… |
… | …1011001110011000101 |
3 | 22022202222002100221012 |
4 | 1101012203121303011 |
5 | 2411321224003444 |
6 | 104001055332005 |
7 | 6201666361640 |
oct | 1210643316305 |
9 | 268688070835 |
10 | 87083031749 |
11 | 33a2811272a |
12 | 14a63b21005 |
13 | 829a6c006c |
14 | 430174aa57 |
15 | 23ea239b9e |
hex | 14468d9cc5 |
87083031749 has 8 divisors (see below), whose sum is σ = 99527163648. Its totient is φ = 74639824560.
The previous prime is 87083031713. The next prime is 87083031757. The reversal of 87083031749 is 94713038078.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 87083031749 - 236 = 18363555013 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 87083031697 and 87083031706.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87083001749) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16022 + ... + 417639.
It is an arithmetic number, because the mean of its divisors is an integer number (12440895456).
Almost surely, 287083031749 is an apocalyptic number.
It is an amenable number.
87083031749 is a deficient number, since it is larger than the sum of its proper divisors (12444131899).
87083031749 is a wasteful number, since it uses less digits than its factorization.
87083031749 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 462355.
The product of its (nonzero) digits is 1016064, while the sum is 50.
The spelling of 87083031749 in words is "eighty-seven billion, eighty-three million, thirty-one thousand, seven hundred forty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •