Base | Representation |
---|---|
bin | 11010000110110100… |
… | …110100110111101000 |
3 | 2200100120202220211220 |
4 | 122012310310313220 |
5 | 424402120030020 |
6 | 20513322422040 |
7 | 2011440233550 |
oct | 320664646750 |
9 | 80316686756 |
10 | 28031798760 |
11 | 10985246339 |
12 | 5523961920 |
13 | 28496a2694 |
14 | 14dccaa160 |
15 | ae0e48240 |
hex | 686d34de8 |
28031798760 has 64 divisors (see below), whose sum is σ = 96109027200. Its totient is φ = 6407268096.
The previous prime is 28031798737. The next prime is 28031798783. The reversal of 28031798760 is 6789713082.
It is an interprime number because it is at equal distance from previous prime (28031798737) and next prime (28031798783).
It is a super-2 number, since 2×280317987602 (a number of 22 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16684755 + ... + 16686434.
It is an arithmetic number, because the mean of its divisors is an integer number (1501703550).
Almost surely, 228031798760 is an apocalyptic number.
28031798760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
28031798760 is an abundant number, since it is smaller than the sum of its proper divisors (68077228440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28031798760 is a wasteful number, since it uses less digits than its factorization.
28031798760 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33371210 (or 33371206 counting only the distinct ones).
The product of its (nonzero) digits is 1016064, while the sum is 51.
The spelling of 28031798760 in words is "twenty-eight billion, thirty-one million, seven hundred ninety-eight thousand, seven hundred sixty".
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