28867796916 has 24 divisors (see below), whose sum is σ = 76980792000. Its totient is φ = 8247941952.

The previous prime is 28867796911. The next prime is 28867796921. The reversal of 28867796916 is 61969776882.

It is an interprime number because it is at equal distance from previous prime (28867796911) and next prime (28867796921).

It is a super-2 number, since 2×28867796916² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28867796911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171832041 + ... + 171832208.

It is an arithmetic number, because the mean of its divisors is an integer number (3207533000).

Almost surely, 2^28867796916 is an apocalyptic number.

It is an amenable number.

28867796916 is an abundant number, since it is smaller than the sum of its proper divisors (48112995084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28867796916 is a wasteful number, since it uses less digits than its factorization.

28867796916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343664263 (or 343664261 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 69.

The spelling of 28867796916 in words is "twenty-eight billion, eight hundred sixty-seven million, seven hundred ninety-six thousand, nine hundred sixteen".