Base | Representation |
---|---|
bin | 10111110101111011… |
… | …11010110001001000 |
3 | 1020001002100020212202 |
4 | 23322331322301020 |
5 | 202203410020323 |
6 | 5514102255332 |
7 | 632131125530 |
oct | 137275726110 |
9 | 36032306782 |
10 | 12800470088 |
11 | 54795936aa |
12 | 2592a27548 |
13 | 128cc50673 |
14 | 89606a4c0 |
15 | 4edb8bd28 |
hex | 2faf7ac48 |
12800470088 has 64 divisors (see below), whose sum is σ = 29024870400. Its totient is φ = 5169890880.
The previous prime is 12800470079. The next prime is 12800470099. The reversal of 12800470088 is 88007400821.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (38).
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, 171731 + ... + 234717.
It is an arithmetic number, because the mean of its divisors is an integer number (453513600).
Almost surely, 212800470088 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12800470088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14512435200).
12800470088 is an abundant number, since it is smaller than the sum of its proper divisors (16224400312).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12800470088 is a wasteful number, since it uses less digits than its factorization.
12800470088 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 63210 (or 63206 counting only the distinct ones).
The product of its (nonzero) digits is 28672, while the sum is 38.
The spelling of 12800470088 in words is "twelve billion, eight hundred million, four hundred seventy thousand, eighty-eight".
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