Base | Representation |
---|---|
bin | 11000011100100001… |
… | …11000111011110100 |
3 | 1020212122111222010102 |
4 | 30032100320323310 |
5 | 203334244213140 |
6 | 10010145213232 |
7 | 643141643066 |
oct | 141620707364 |
9 | 36778458112 |
10 | 13124210420 |
11 | 56253025a2 |
12 | 2663331218 |
13 | 13120411a9 |
14 | 8c705d736 |
15 | 51c2d9e15 |
hex | 30e438ef4 |
13124210420 has 48 divisors (see below), whose sum is σ = 28716508800. Its totient is φ = 5032164480.
The previous prime is 13124210419. The next prime is 13124210431. The reversal of 13124210420 is 2401242131.
13124210420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 13124210392 and 13124210401.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776 + ... + 162015.
It is an arithmetic number, because the mean of its divisors is an integer number (598260600).
Almost surely, 213124210420 is an apocalyptic number.
13124210420 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 13124210420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14358254400).
13124210420 is an abundant number, since it is smaller than the sum of its proper divisors (15592298380).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13124210420 is a wasteful number, since it uses less digits than its factorization.
13124210420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 162968 (or 162966 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 20.
Adding to 13124210420 its reverse (2401242131), we get a palindrome (15525452551).
The spelling of 13124210420 in words is "thirteen billion, one hundred twenty-four million, two hundred ten thousand, four hundred twenty".
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