Base | Representation |
---|---|
bin | 1111100011000… |
… | …01110010110001 |
3 | 100002102020001222 |
4 | 13301201302301 |
5 | 231342031420 |
6 | 20535234425 |
7 | 3142404566 |
oct | 761416261 |
9 | 302366058 |
10 | 130423985 |
11 | 6769151a |
12 | 37818a15 |
13 | 21036773 |
14 | 1347086d |
15 | b6b4225 |
hex | 7c61cb1 |
130423985 has 16 divisors (see below), whose sum is σ = 158447232. Its totient is φ = 103056000.
The previous prime is 130423981. The next prime is 130424057. The reversal of 130423985 is 589324031.
It is not a de Polignac number, because 130423985 - 22 = 130423981 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130423981) 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, 171005 + ... + 171765.
It is an arithmetic number, because the mean of its divisors is an integer number (9902952).
Almost surely, 2130423985 is an apocalyptic number.
It is an amenable number.
130423985 is a deficient number, since it is larger than the sum of its proper divisors (28023247).
130423985 is a wasteful number, since it uses less digits than its factorization.
130423985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1144.
The product of its (nonzero) digits is 25920, while the sum is 35.
The square root of 130423985 is about 11420.3320879911. The cubic root of 130423985 is about 507.1298278551.
The spelling of 130423985 in words is "one hundred thirty million, four hundred twenty-three thousand, nine hundred eighty-five".
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