28776280568 has 48 divisors (see below), whose sum is σ = 62826939000. Its totient is φ = 12320441280.

The previous prime is 28776280567. The next prime is 28776280601. The reversal of 28776280568 is 86508267782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776280567) 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 11 ways as a sum of consecutive naturals, for example, 364283 + ... + 436181.

Almost surely, 2^28776280568 is an apocalyptic number.

28776280568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28776280568 is an abundant number, since it is smaller than the sum of its proper divisors (34050658432).

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

28776280568 is a wasteful number, since it uses less digits than its factorization.

28776280568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72940 (or 72929 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 28776280568 in words is "twenty-eight billion, seven hundred seventy-six million, two hundred eighty thousand, five hundred sixty-eight".