130826 has 4 divisors (see below), whose sum is σ = 196242. Its totient is φ = 65412.

The previous prime is 130817. The next prime is 130829. The reversal of 130826 is 628031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628031 = 17 ⋅36943.

It can be written as a sum of positive squares in only one way, i.e., 121801 + 9025 = 349^2 + 95^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130798 and 130807.

It is not an unprimeable number, because it can be changed into a prime (130829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32705 + ... + 32708.

2¹³⁰⁸²⁶ is an apocalyptic number.

130826 is a deficient number, since it is larger than the sum of its proper divisors (65416).

130826 is an equidigital number, since it uses as much as digits as its factorization.

130826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65415.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 130826 is about 361.6987696966. The cubic root of 130826 is about 50.7650347360.

Adding to 130826 its reverse (628031), we get a palindrome (758857).

The spelling of 130826 in words is "one hundred thirty thousand, eight hundred twenty-six".