28369785766 has 16 divisors (see below), whose sum is σ = 48642516000. Its totient is φ = 12156330240.

The previous prime is 28369785707. The next prime is 28369785767. The reversal of 28369785766 is 66758796382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369785767) 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 in 7 ways as a sum of consecutive naturals, for example, 95755 + ... + 256726.

It is an arithmetic number, because the mean of its divisors is an integer number (3040157250).

Almost surely, 2^28369785766 is an apocalyptic number.

28369785766 is a deficient number, since it is larger than the sum of its proper divisors (20272730234).

28369785766 is a wasteful number, since it uses less digits than its factorization.

28369785766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358239.

The product of its digits is 182891520, while the sum is 67.

The spelling of 28369785766 in words is "twenty-eight billion, three hundred sixty-nine million, seven hundred eighty-five thousand, seven hundred sixty-six".