Base | Representation |
---|---|
bin | 1100101111001001011010… |
… | …10111001111000011000000 |
3 | 10200011120011121010200100121 |
4 | 12113210231113033003000 |
5 | 12132341340124143010 |
6 | 135322450434030024 |
7 | 5620346236506334 |
oct | 627445527170300 |
9 | 120146147120317 |
10 | 28008242802880 |
11 | 8a1925798605a |
12 | 3184227a18314 |
13 | 1282220810842 |
14 | 6cb86b5297c4 |
15 | 33885a7a83da |
hex | 19792d5cf0c0 |
28008242802880 has 28 divisors (see below), whose sum is σ = 66694628175120. Its totient is φ = 11203297121024.
The previous prime is 28008242802851. The next prime is 28008242802887. The reversal of 28008242802880 is 8820824280082.
It is a super-4 number, since 4×280082428028804 (a number of 55 digits) contains 4444 as substring.
It is not an unprimeable number, because it can be changed into a prime (28008242802887) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43762879060 + ... + 43762879699.
Almost surely, 228008242802880 is an apocalyptic number.
28008242802880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
28008242802880 is an abundant number, since it is smaller than the sum of its proper divisors (38686385372240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28008242802880 is an equidigital number, since it uses as much as digits as its factorization.
28008242802880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 87525758776 (or 87525758766 counting only the distinct ones).
The product of its (nonzero) digits is 2097152, while the sum is 52.
The spelling of 28008242802880 in words is "twenty-eight trillion, eight billion, two hundred forty-two million, eight hundred two thousand, eight hundred eighty".
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