Base | Representation |
---|---|
bin | 1111100011010… |
… | …01101101010101 |
3 | 100002110212112201 |
4 | 13301221231111 |
5 | 231344101110 |
6 | 20540044501 |
7 | 3142601242 |
oct | 761515525 |
9 | 302425481 |
10 | 130456405 |
11 | 67703912 |
12 | 37833731 |
13 | 21048451 |
14 | 1347c5c9 |
15 | b6bdb3a |
hex | 7c69b55 |
130456405 has 8 divisors (see below), whose sum is σ = 156911832. Its totient is φ = 104122368.
The previous prime is 130456399. The next prime is 130456427. The reversal of 130456405 is 504654031.
It can be written as a sum of positive squares in 4 ways, for example, as 8773444 + 121682961 = 2962^2 + 11031^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130456405 - 29 = 130455893 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27964 + ... + 32293.
It is an arithmetic number, because the mean of its divisors is an integer number (19613979).
Almost surely, 2130456405 is an apocalyptic number.
It is an amenable number.
130456405 is a deficient number, since it is larger than the sum of its proper divisors (26455427).
130456405 is an equidigital number, since it uses as much as digits as its factorization.
130456405 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60695.
The product of its (nonzero) digits is 7200, while the sum is 28.
The square root of 130456405 is about 11421.7513981000. The cubic root of 130456405 is about 507.1718441220.
The spelling of 130456405 in words is "one hundred thirty million, four hundred fifty-six thousand, four hundred five".
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