1328013026 has 4 divisors (see below), whose sum is σ = 1992019542. Its totient is φ = 664006512.

The previous prime is 1328013023. The next prime is 1328013053. The reversal of 1328013026 is 6203108231.

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., 1142372401 + 185640625 = 33799^2 + 13625^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1328012986 and 1328013004.

It is not an unprimeable number, because it can be changed into a prime (1328013023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332003255 + ... + 332003258.

Almost surely, 2^1328013026 is an apocalyptic number.

1328013026 is a deficient number, since it is larger than the sum of its proper divisors (664006516).

1328013026 is an equidigital number, since it uses as much as digits as its factorization.

1328013026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664006515.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1328013026 is about 36441.9130397953. The cubic root of 1328013026 is about 1099.1765258392.

The spelling of 1328013026 in words is "one billion, three hundred twenty-eight million, thirteen thousand, twenty-six".