28342078766 has 4 divisors (see below), whose sum is σ = 42513118152. Its totient is φ = 14171039382.

The previous prime is 28342078643. The next prime is 28342078781. The reversal of 28342078766 is 66787024382.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7085519690 + ... + 7085519693.

It is an arithmetic number, because the mean of its divisors is an integer number (10628279538).

Almost surely, 2^28342078766 is an apocalyptic number.

28342078766 is a deficient number, since it is larger than the sum of its proper divisors (14171039386).

28342078766 is a wasteful number, since it uses less digits than its factorization.

28342078766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14171039385.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 28342078766 in words is "twenty-eight billion, three hundred forty-two million, seventy-eight thousand, seven hundred sixty-six".