Base | Representation |
---|---|
bin | 11000000101100101… |
… | …00001101011101000 |
3 | 1020101020021111111200 |
4 | 30002302201223220 |
5 | 202441003421410 |
6 | 5535111124200 |
7 | 635313435405 |
oct | 140262415350 |
9 | 36336244450 |
10 | 12931701480 |
11 | 55366767a5 |
12 | 260a973660 |
13 | 12b11aa789 |
14 | 8a966b2ac |
15 | 50a4603c0 |
hex | 302ca1ae8 |
12931701480 has 96 divisors (see below), whose sum is σ = 42066577800. Its totient is φ = 3445291008.
The previous prime is 12931701469. The next prime is 12931701481. The reversal of 12931701480 is 8410713921.
It is a happy number.
12931701480 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 170 + 1 + 480 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 10183635396 + 2748066084 = 100914^2 + 52422^2 .
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (12931701481) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390532 + ... + 422348.
Almost surely, 212931701480 is an apocalyptic number.
12931701480 is a gapful number since it is divisible by the number (10) 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 12931701480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21033288900).
12931701480 is an abundant number, since it is smaller than the sum of its proper divisors (29134876320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12931701480 is a wasteful number, since it uses less digits than its factorization.
12931701480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32963 (or 32956 counting only the distinct ones).
The product of its (nonzero) digits is 12096, while the sum is 36.
The spelling of 12931701480 in words is "twelve billion, nine hundred thirty-one million, seven hundred one thousand, four hundred eighty".
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