Base | Representation |
---|---|
bin | 110001000111… |
… | …010010110011 |
3 | 220020010002022 |
4 | 301013102303 |
5 | 11243444211 |
6 | 1135542055 |
7 | 214302146 |
oct | 61072263 |
9 | 26203068 |
10 | 12874931 |
11 | 72a4143 |
12 | 438a92b |
13 | 288a304 |
14 | 19d205d |
15 | 11e4bdb |
hex | c474b3 |
12874931 has 4 divisors (see below), whose sum is σ = 13174392. Its totient is φ = 12575472.
The previous prime is 12874903. The next prime is 12874949. The reversal of 12874931 is 13947821.
12874931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12874931 is a prime.
It is a super-2 number, since 2×128749312 = 331527696509522, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12874891 and 12874900.
It is not an unprimeable number, because it can be changed into a prime (12874991) 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, 149666 + ... + 149751.
It is an arithmetic number, because the mean of its divisors is an integer number (3293598).
Almost surely, 212874931 is an apocalyptic number.
12874931 is a deficient number, since it is larger than the sum of its proper divisors (299461).
12874931 is an equidigital number, since it uses as much as digits as its factorization.
12874931 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 299460.
The product of its digits is 12096, while the sum is 35.
The square root of 12874931 is about 3588.1654086734. The cubic root of 12874931 is about 234.3769886883.
The spelling of 12874931 in words is "twelve million, eight hundred seventy-four thousand, nine hundred thirty-one".
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