13028078306 has 4 divisors (see below), whose sum is σ = 19542117462. Its totient is φ = 6514039152.

The previous prime is 13028078293. The next prime is 13028078311. The reversal of 13028078306 is 60387082031.

It is a happy number.

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., 12076911025 + 951167281 = 109895^2 + 30841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13028078306.

It is an unprimeable number.

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, 3257019575 + ... + 3257019578.

Almost surely, 2^13028078306 is an apocalyptic number.

13028078306 is a deficient number, since it is larger than the sum of its proper divisors (6514039156).

13028078306 is an equidigital number, since it uses as much as digits as its factorization.

13028078306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514039155.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 13028078306 in words is "thirteen billion, twenty-eight million, seventy-eight thousand, three hundred six".