| Base | Representation |
|---|---|
| bin | 10111110000000000… |
| … | …00110110101000000 |
| 3 | 1012220121201021210100 |
| 4 | 23320000012311000 |
| 5 | 202103140242003 |
| 6 | 5505124002400 |
| 7 | 630655156560 |
| oct | 137000066500 |
| 9 | 35817637710 |
| 10 | 12750712128 |
| 11 | 5453498820 |
| 12 | 257a230400 |
| 13 | 128284b49b |
| 14 | 88d5d6da0 |
| 15 | 4e960dba3 |
| hex | 2f8006d40 |
12750712128 has 336 divisors, whose sum is σ = 47967229440. Its totient is φ = 3137356800.
The previous prime is 12750712123. The next prime is 12750712133. The reversal of 12750712128 is 82121705721.
12750712128 is a `hidden beast` number, since 1 + 2 + 7 + 507 + 121 + 28 = 666.
It is an interprime number because it is at equal distance from previous prime (12750712123) and next prime (12750712133).
It is a tau number, because it is divible by the number of its divisors (336).
It is a super-2 number, since 2×127507121282 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 12750712092 and 12750712101.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12750712123) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 835123 + ... + 850253.
Almost surely, 212750712128 is an apocalyptic number.
12750712128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12750712128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23983614720).
12750712128 is an abundant number, since it is smaller than the sum of its proper divisors (35216517312).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12750712128 is a wasteful number, since it uses less digits than its factorization.
12750712128 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15186 (or 15173 counting only the distinct ones).
The product of its (nonzero) digits is 15680, while the sum is 36.
The spelling of 12750712128 in words is "twelve billion, seven hundred fifty million, seven hundred twelve thousand, one hundred twenty-eight".
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