Base | Representation |
---|---|
bin | 110001101010… |
… | …110011110111 |
3 | 220111111122022 |
4 | 301222303313 |
5 | 11313123112 |
6 | 1143023355 |
7 | 215446241 |
oct | 61526367 |
9 | 26444568 |
10 | 13020407 |
11 | 7393474 |
12 | 443ab5b |
13 | 290b5aa |
14 | 1a2d091 |
15 | 1222d72 |
hex | c6acf7 |
13020407 has 8 divisors (see below), whose sum is σ = 13230000. Its totient is φ = 12812544.
The previous prime is 13020383. The next prime is 13020431. The reversal of 13020407 is 70402031.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (13020383) and next prime (13020431).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13020407 - 28 = 13020151 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13020467) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25844 + ... + 26342.
It is an arithmetic number, because the mean of its divisors is an integer number (1653750).
Almost surely, 213020407 is an apocalyptic number.
13020407 is a deficient number, since it is larger than the sum of its proper divisors (209593).
13020407 is an equidigital number, since it uses as much as digits as its factorization.
13020407 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 865.
The product of its (nonzero) digits is 168, while the sum is 17.
The square root of 13020407 is about 3608.3801074720. The cubic root of 13020407 is about 235.2564395441.
Adding to 13020407 its reverse (70402031), we get a palindrome (83422438).
It can be divided in two parts, 13020 and 407, that multiplied together give a triangular number (5299140 = T3255).
The spelling of 13020407 in words is "thirteen million, twenty thousand, four hundred seven".
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