Base | Representation |
---|---|
bin | 10010101000010110… |
… | …00110100101010000 |
3 | 221211001202220200200 |
4 | 21110023012211100 |
5 | 130441021200110 |
6 | 4332300215200 |
7 | 502601466411 |
oct | 112413064520 |
9 | 27731686620 |
10 | 10002131280 |
11 | 4272a402a9 |
12 | 1b3183a500 |
13 | c3528559b |
14 | 6ac559808 |
15 | 3d817e6c0 |
hex | 2542c6950 |
10002131280 has 240 divisors, whose sum is σ = 34057355904. Its totient is φ = 2630476800.
The previous prime is 10002131273. The next prime is 10002131287. The reversal of 10002131280 is 8213120001.
It is an interprime number because it is at equal distance from previous prime (10002131273) and next prime (10002131287).
It is a tau number, because it is divible by the number of its divisors (240).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10002131287) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21417607 + ... + 21418073.
Almost surely, 210002131280 is an apocalyptic number.
10002131280 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 10002131280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17028677952).
10002131280 is an abundant number, since it is smaller than the sum of its proper divisors (24055224624).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10002131280 is a wasteful number, since it uses less digits than its factorization.
10002131280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 834 (or 825 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 18.
Adding to 10002131280 its reverse (8213120001), we get a palindrome (18215251281).
The spelling of 10002131280 in words is "ten billion, two million, one hundred thirty-one thousand, two hundred eighty".
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