Base | Representation |
---|---|
bin | 110010101100… |
… | …110101111101 |
3 | 221000020122201 |
4 | 302230311331 |
5 | 11400302002 |
6 | 1152511501 |
7 | 220653625 |
oct | 62546575 |
9 | 27006581 |
10 | 13290877 |
11 | 75586a6 |
12 | 454b591 |
13 | 29a4732 |
14 | 1a9d885 |
15 | 1278087 |
hex | cacd7d |
13290877 has 4 divisors (see below), whose sum is σ = 13304380. Its totient is φ = 13277376.
The previous prime is 13290853. The next prime is 13290887. The reversal of 13290877 is 77809231.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77809231 = 43 ⋅1809517.
It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 9523396 = 1941^2 + 3086^2 .
It is a cyclic number.
It is not a de Polignac number, because 13290877 - 211 = 13288829 is a prime.
It is a super-2 number, since 2×132908772 = 353294822858258, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13290887) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5148 + ... + 7285.
It is an arithmetic number, because the mean of its divisors is an integer number (3326095).
Almost surely, 213290877 is an apocalyptic number.
It is an amenable number.
13290877 is a deficient number, since it is larger than the sum of its proper divisors (13503).
13290877 is a wasteful number, since it uses less digits than its factorization.
13290877 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13502.
The product of its (nonzero) digits is 21168, while the sum is 37.
The square root of 13290877 is about 3645.6655085183. The cubic root of 13290877 is about 236.8742649360.
The spelling of 13290877 in words is "thirteen million, two hundred ninety thousand, eight hundred seventy-seven".
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