Base | Representation |
---|---|
bin | 111011111100… |
… | …011101001001 |
3 | 1002120100201111 |
4 | 323330131021 |
5 | 13010322441 |
6 | 1320450321 |
7 | 250365523 |
oct | 73743511 |
9 | 32510644 |
10 | 15714121 |
11 | 8963285 |
12 | 53199a1 |
13 | 33426c7 |
14 | 2130a13 |
15 | 15a6081 |
hex | efc749 |
15714121 has 8 divisors (see below), whose sum is σ = 16894080. Its totient is φ = 14569488.
The previous prime is 15714079. The next prime is 15714131. The reversal of 15714121 is 12141751.
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 15714121 - 29 = 15713609 is a prime.
It is a super-3 number, since 3×157141213 (a number of 23 digits) contains 333 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 15714092 and 15714101.
It is not an unprimeable number, because it can be changed into a prime (15714131) 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, 7906 + ... + 9691.
It is an arithmetic number, because the mean of its divisors is an integer number (2111760).
Almost surely, 215714121 is an apocalyptic number.
It is an amenable number.
15714121 is a deficient number, since it is larger than the sum of its proper divisors (1179959).
15714121 is a wasteful number, since it uses less digits than its factorization.
15714121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17663.
The product of its digits is 280, while the sum is 22.
The square root of 15714121 is about 3964.1040601881. The cubic root of 15714121 is about 250.4744111667.
Adding to 15714121 its reverse (12141751), we get a palindrome (27855872).
The spelling of 15714121 in words is "fifteen million, seven hundred fourteen thousand, one hundred twenty-one".
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