28206923768 has 16 divisors (see below), whose sum is σ = 53612476080. Its totient is φ = 13910263488.

The previous prime is 28206923659. The next prime is 28206923783. The reversal of 28206923768 is 86732960282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24149180 + ... + 24150347.

It is an arithmetic number, because the mean of its divisors is an integer number (3350779755).

Almost surely, 2^28206923768 is an apocalyptic number.

It is an amenable number.

28206923768 is a deficient number, since it is larger than the sum of its proper divisors (25405552312).

28206923768 is a wasteful number, since it uses less digits than its factorization.

28206923768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48299606 (or 48299602 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 28206923768 in words is "twenty-eight billion, two hundred six million, nine hundred twenty-three thousand, seven hundred sixty-eight".