Base | Representation |
---|---|
bin | 10001100101110110… |
… | …100110101100001000 |
3 | 1210202101101110220000 |
4 | 101211312212230020 |
5 | 302141000312443 |
6 | 12402150003000 |
7 | 1236036102312 |
oct | 214566465410 |
9 | 53671343800 |
10 | 18888682248 |
11 | 80131945a7 |
12 | 37b1946460 |
13 | 1a20393677 |
14 | cb287c7b2 |
15 | 7583eb8d3 |
hex | 465da6b08 |
18888682248 has 60 divisors (see below), whose sum is σ = 52915600815. Its totient is φ = 6295061232.
The previous prime is 18888682237. The next prime is 18888682271. The reversal of 18888682248 is 84228688881.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in only one way, i.e., 9444341124 + 9444341124 = 97182^2 + 97182^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=97182.
It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3495853 + ... + 3501251.
Almost surely, 218888682248 is an apocalyptic number.
18888682248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
18888682248 is an abundant number, since it is smaller than the sum of its proper divisors (34026918567).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18888682248 is an frugal number, since it uses more digits than its factorization.
18888682248 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10816 (or 5404 counting only the distinct ones).
The product of its digits is 25165824, while the sum is 63.
The spelling of 18888682248 in words is "eighteen billion, eight hundred eighty-eight million, six hundred eighty-two thousand, two hundred forty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •