13120826 has 4 divisors (see below), whose sum is σ = 19681242. Its totient is φ = 6560412.

The previous prime is 13120823. The next prime is 13120831. The reversal of 13120826 is 62802131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12609601 + 511225 = 3551^2 + 715^2 .

It is not an unprimeable number, because it can be changed into a prime (13120823) 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, 3280205 + ... + 3280208.

Almost surely, 2^13120826 is an apocalyptic number.

13120826 is a deficient number, since it is larger than the sum of its proper divisors (6560416).

13120826 is an equidigital number, since it uses as much as digits as its factorization.

13120826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560415.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13120826 is about 3622.2680740111. The cubic root of 13120826 is about 235.8596910889.

Adding to 13120826 its reverse (62802131), we get a palindrome (75922957).

The spelling of 13120826 in words is "thirteen million, one hundred twenty thousand, eight hundred twenty-six".