Base | Representation |
---|---|
bin | 1101000001111110110… |
… | …0110111100011100010 |
3 | 210101211220012012022102 |
4 | 3100133230313203202 |
5 | 12131441224424403 |
6 | 250502230210402 |
7 | 22113465630401 |
oct | 3203754674342 |
9 | 711756165272 |
10 | 223870154978 |
11 | 86a40958a08 |
12 | 374797b3a02 |
13 | 18159755432 |
14 | ab9a39b638 |
15 | 5c53d67b88 |
hex | 341fb378e2 |
223870154978 has 18 divisors (see below), whose sum is σ = 338116408353. Its totient is φ = 111169922760.
The previous prime is 223870154971. The next prime is 223870155007. The reversal of 223870154978 is 879451078322.
It can be written as a sum of positive squares in 2 ways, for example, as 213838730329 + 10031424649 = 462427^2 + 100157^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=334567.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (223870154971) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 105052973 + ... + 105055103.
Almost surely, 2223870154978 is an apocalyptic number.
223870154978 is a deficient number, since it is larger than the sum of its proper divisors (114246253375).
223870154978 is an frugal number, since it uses more digits than its factorization.
223870154978 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4578 (or 2290 counting only the distinct ones).
The product of its (nonzero) digits is 6773760, while the sum is 56.
The spelling of 223870154978 in words is "two hundred twenty-three billion, eight hundred seventy million, one hundred fifty-four thousand, nine hundred seventy-eight".
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