Base | Representation |
---|---|
bin | 100011100111… |
… | …1010100111111 |
3 | 1022010210021221 |
4 | 1013033110333 |
5 | 14240100012 |
6 | 1504134211 |
7 | 314510041 |
oct | 107172477 |
9 | 38123257 |
10 | 18675007 |
11 | a5a589a |
12 | 6307367 |
13 | 3b3b300 |
14 | 26a1a91 |
15 | 198d507 |
hex | 11cf53f |
18675007 has 6 divisors (see below), whose sum is σ = 20222232. Its totient is φ = 17238312.
The previous prime is 18674987. The next prime is 18675053. The reversal of 18675007 is 70057681.
It is not a de Polignac number, because 18675007 - 27 = 18674879 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 (18675907) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55083 + ... + 55420.
It is an arithmetic number, because the mean of its divisors is an integer number (3370372).
Almost surely, 218675007 is an apocalyptic number.
18675007 is a deficient number, since it is larger than the sum of its proper divisors (1547225).
18675007 is a wasteful number, since it uses less digits than its factorization.
18675007 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 110529 (or 110516 counting only the distinct ones).
The product of its (nonzero) digits is 11760, while the sum is 34.
The square root of 18675007 is about 4321.4588971781. The cubic root of 18675007 is about 265.3099825765.
The spelling of 18675007 in words is "eighteen million, six hundred seventy-five thousand, seven".
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