Base | Representation |
---|---|
bin | 11101000101011… |
… | …101100110000111 |
3 | 1021000012111122200 |
4 | 131011131212013 |
5 | 1444410034312 |
6 | 120230525543 |
7 | 15043454403 |
oct | 3505354607 |
9 | 1230174580 |
10 | 487971207 |
11 | 2304a0a99 |
12 | 1175068b3 |
13 | 7a132c79 |
14 | 48b44103 |
15 | 2cc8e0dc |
hex | 1d15d987 |
487971207 has 24 divisors (see below), whose sum is σ = 731408496. Its totient is φ = 313238016.
The previous prime is 487971203. The next prime is 487971221. The reversal of 487971207 is 702179784.
It is a happy number.
It is not a de Polignac number, because 487971207 - 22 = 487971203 is a prime.
It is a super-2 number, since 2×4879712072 = 476231797722073698, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (487971203) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24748 + ... + 39854.
It is an arithmetic number, because the mean of its divisors is an integer number (30475354).
Almost surely, 2487971207 is an apocalyptic number.
487971207 is a deficient number, since it is larger than the sum of its proper divisors (243437289).
487971207 is a wasteful number, since it uses less digits than its factorization.
487971207 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15247 (or 15244 counting only the distinct ones).
The product of its (nonzero) digits is 197568, while the sum is 45.
The square root of 487971207 is about 22090.0703258274. The cubic root of 487971207 is about 787.2839522225.
The spelling of 487971207 in words is "four hundred eighty-seven million, nine hundred seventy-one thousand, two hundred seven".
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