28080030766 has 4 divisors (see below), whose sum is σ = 42120046152. Its totient is φ = 14040015382.

The previous prime is 28080030757. The next prime is 28080030773. The reversal of 28080030766 is 66703008082.

It is a happy number.

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

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, 7020007690 + ... + 7020007693.

It is an arithmetic number, because the mean of its divisors is an integer number (10530011538).

Almost surely, 2^28080030766 is an apocalyptic number.

28080030766 is a deficient number, since it is larger than the sum of its proper divisors (14040015386).

28080030766 is a wasteful number, since it uses less digits than its factorization.

28080030766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14040015385.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 28080030766 in words is "twenty-eight billion, eighty million, thirty thousand, seven hundred sixty-six".