Base | Representation |
---|---|
bin | 1111010000000… |
… | …00111011100111 |
3 | 22220201112002101 |
4 | 13220000323213 |
5 | 230222230322 |
6 | 20405552531 |
7 | 3112250005 |
oct | 750007347 |
9 | 286645071 |
10 | 127930087 |
11 | 6623884a |
12 | 36a15747 |
13 | 2067259c |
14 | 12dc1a75 |
15 | b370327 |
hex | 7a00ee7 |
127930087 has 4 divisors (see below), whose sum is σ = 132056896. Its totient is φ = 123803280.
The previous prime is 127930079. The next prime is 127930093. The reversal of 127930087 is 780039721.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780039721 = 9551 ⋅81671.
It is a cyclic number.
It is not a de Polignac number, because 127930087 - 23 = 127930079 is a prime.
It is a super-2 number, since 2×1279300872 = 32732214319655138, 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 (127930007) 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, 2063358 + ... + 2063419.
It is an arithmetic number, because the mean of its divisors is an integer number (33014224).
Almost surely, 2127930087 is an apocalyptic number.
127930087 is a deficient number, since it is larger than the sum of its proper divisors (4126809).
127930087 is an equidigital number, since it uses as much as digits as its factorization.
127930087 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4126808.
The product of its (nonzero) digits is 21168, while the sum is 37.
The square root of 127930087 is about 11310.6183296936. The cubic root of 127930087 is about 503.8766481846.
The spelling of 127930087 in words is "one hundred twenty-seven million, nine hundred thirty thousand, eighty-seven".
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