Base | Representation |
---|---|
bin | 11000000000000111… |
… | …10001011010111101 |
3 | 1020021001002001222221 |
4 | 30000003301122331 |
5 | 202342242000444 |
6 | 5530353205341 |
7 | 634216156414 |
oct | 140003613275 |
9 | 36231061887 |
10 | 12885890749 |
11 | 5512827496 |
12 | 25b7560851 |
13 | 12a485b134 |
14 | 8a354447b |
15 | 506411a84 |
hex | 3000f16bd |
12885890749 has 8 divisors (see below), whose sum is σ = 13088537280. Its totient is φ = 12683832000.
The previous prime is 12885890681. The next prime is 12885890753. The reversal of 12885890749 is 94709858821.
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 12885890749 - 213 = 12885882557 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12885893749) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102652 + ... + 190549.
It is an arithmetic number, because the mean of its divisors is an integer number (1636067160).
Almost surely, 212885890749 is an apocalyptic number.
It is an amenable number.
12885890749 is a deficient number, since it is larger than the sum of its proper divisors (202646531).
12885890749 is an equidigital number, since it uses as much as digits as its factorization.
12885890749 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 293891.
The product of its (nonzero) digits is 11612160, while the sum is 61.
The spelling of 12885890749 in words is "twelve billion, eight hundred eighty-five million, eight hundred ninety thousand, seven hundred forty-nine".
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