130478 has 4 divisors (see below), whose sum is σ = 195720. Its totient is φ = 65238.
The previous prime is 130477. The next prime is 130483. The reversal of 130478 is 874031.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874031 = 29 ⋅30139.
It is a plaindrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130477) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32618 + ... + 32621.
It is an arithmetic number, because the mean of its divisors is an integer number (48930).
2130478 is an apocalyptic number.
130478 is a deficient number, since it is larger than the sum of its proper divisors (65242).
130478 is an equidigital number, since it uses as much as digits as its factorization.
130478 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 65241.
The product of its (nonzero) digits is 672, while the sum is 23.
The square root of 130478 is about 361.2173860710. The cubic root of 130478 is about 50.7199827344.
The spelling of 130478 in words is "one hundred thirty thousand, four hundred seventy-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •