Base | Representation |
---|---|
bin | 1111100110100… |
… | …00101111101111 |
3 | 100010021022110220 |
4 | 13303100233233 |
5 | 232001102242 |
6 | 20553102423 |
7 | 3146306550 |
oct | 763205757 |
9 | 303238426 |
10 | 130878447 |
11 | 67971a07 |
12 | 379b7a13 |
13 | 2116558b |
14 | 1354c327 |
15 | b753bec |
hex | 7cd0bef |
130878447 has 16 divisors (see below), whose sum is σ = 200385792. Its totient is φ = 74430720.
The previous prime is 130878413. The next prime is 130878481. The reversal of 130878447 is 744878031.
It is an interprime number because it is at equal distance from previous prime (130878413) and next prime (130878481).
It is not a de Polignac number, because 130878447 - 26 = 130878383 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 130878399 and 130878408.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130878047) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10338 + ... + 19199.
It is an arithmetic number, because the mean of its divisors is an integer number (12524112).
Almost surely, 2130878447 is an apocalyptic number.
130878447 is a deficient number, since it is larger than the sum of its proper divisors (69507345).
130878447 is a wasteful number, since it uses less digits than its factorization.
130878447 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 29758.
The product of its (nonzero) digits is 150528, while the sum is 42.
The square root of 130878447 is about 11440.2118424442. The cubic root of 130878447 is about 507.7181758258.
The spelling of 130878447 in words is "one hundred thirty million, eight hundred seventy-eight thousand, four hundred forty-seven".
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