Base | Representation |
---|---|
bin | 110001101000… |
… | …010111110101 |
3 | 220110222221110 |
4 | 301220113311 |
5 | 11312313141 |
6 | 1142505233 |
7 | 215405154 |
oct | 61502765 |
9 | 26428843 |
10 | 13010421 |
11 | 7386a16 |
12 | 4435219 |
13 | 2906b98 |
14 | 1a2959b |
15 | 121ee16 |
hex | c685f5 |
13010421 has 32 divisors (see below), whose sum is σ = 19456000. Its totient is φ = 7698240.
The previous prime is 13010419. The next prime is 13010447. The reversal of 13010421 is 12401031.
It is a happy number.
It is not a de Polignac number, because 13010421 - 21 = 13010419 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13010397 and 13010406.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13010411) 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 31 ways as a sum of consecutive naturals, for example, 65280 + ... + 65478.
It is an arithmetic number, because the mean of its divisors is an integer number (608000).
Almost surely, 213010421 is an apocalyptic number.
It is an amenable number.
13010421 is a deficient number, since it is larger than the sum of its proper divisors (6445579).
13010421 is a wasteful number, since it uses less digits than its factorization.
13010421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 289.
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 13010421 is about 3606.9961186561. The cubic root of 13010421 is about 235.1962808600.
Adding to 13010421 its reverse (12401031), we get a palindrome (25411452).
It can be divided in two parts, 13010 and 421, that added together give a palindrome (13431).
The spelling of 13010421 in words is "thirteen million, ten thousand, four hundred twenty-one".
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