Base | Representation |
---|---|
bin | 10111111110001110… |
… | …01101101000000000 |
3 | 1020012221012112020022 |
4 | 23333013031220000 |
5 | 202324210443423 |
6 | 5525025033012 |
7 | 633634220021 |
oct | 137707155000 |
9 | 36187175208 |
10 | 12870015488 |
11 | 5504874140 |
12 | 25b2185768 |
13 | 12a14902a5 |
14 | 8a13b0c48 |
15 | 504d27dc8 |
hex | 2ff1cda00 |
12870015488 has 40 divisors (see below), whose sum is σ = 28052624160. Its totient is φ = 5850004480.
The previous prime is 12870015479. The next prime is 12870015491. The reversal of 12870015488 is 88451007821.
12870015488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×128700154882 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (44).
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 1136948 + ... + 1148211.
It is an arithmetic number, because the mean of its divisors is an integer number (701315604).
Almost surely, 212870015488 is an apocalyptic number.
It is an amenable number.
12870015488 is an abundant number, since it is smaller than the sum of its proper divisors (15182608672).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12870015488 is an equidigital number, since it uses as much as digits as its factorization.
12870015488 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2285188 (or 2285172 counting only the distinct ones).
The product of its (nonzero) digits is 143360, while the sum is 44.
The spelling of 12870015488 in words is "twelve billion, eight hundred seventy million, fifteen thousand, four hundred eighty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •