28767139863 has 48 divisors (see below), whose sum is σ = 48741511680. Its totient is φ = 14923440000.

The previous prime is 28767139861. The next prime is 28767139909. The reversal of 28767139863 is 36893176782.

It is not a de Polignac number, because 28767139863 - 2¹ = 28767139861 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28767139797 and 28767139806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28767139861) 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 47 ways as a sum of consecutive naturals, for example, 1202523 + ... + 1226211.

It is an arithmetic number, because the mean of its divisors is an integer number (1015448160).

Almost surely, 2^28767139863 is an apocalyptic number.

28767139863 is a deficient number, since it is larger than the sum of its proper divisors (19974371817).

28767139863 is a wasteful number, since it uses less digits than its factorization.

28767139863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24468 (or 24461 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 60.

The spelling of 28767139863 in words is "twenty-eight billion, seven hundred sixty-seven million, one hundred thirty-nine thousand, eight hundred sixty-three".