Base | Representation |
---|---|
bin | 11010000101000011… |
… | …001100001111100111 |
3 | 2200021111201111110201 |
4 | 122011003030033213 |
5 | 424322003310322 |
6 | 20510340131331 |
7 | 2010626105242 |
oct | 320503141747 |
9 | 80244644421 |
10 | 28002010087 |
11 | 1096a44a6a7 |
12 | 5515996b47 |
13 | 284347294c |
14 | 14d8d54259 |
15 | add511d27 |
hex | 6850cc3e7 |
28002010087 has 8 divisors (see below), whose sum is σ = 28317285360. Its totient is φ = 27687918720.
The previous prime is 28002010079. The next prime is 28002010097. The reversal of 28002010087 is 78001020082.
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 28002010087 - 23 = 28002010079 is a prime.
It is a super-2 number, since 2×280020100872 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28002010027) 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, 248364 + ... + 343057.
It is an arithmetic number, because the mean of its divisors is an integer number (3539660670).
Almost surely, 228002010087 is an apocalyptic number.
28002010087 is a deficient number, since it is larger than the sum of its proper divisors (315275273).
28002010087 is a wasteful number, since it uses less digits than its factorization.
28002010087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 591953.
The product of its (nonzero) digits is 1792, while the sum is 28.
The spelling of 28002010087 in words is "twenty-eight billion, two million, ten thousand, eighty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •