28668781360 has 40 divisors (see below), whose sum is σ = 66662068176. Its totient is φ = 11466282240.

The previous prime is 28668781303. The next prime is 28668781381. The reversal of 28668781360 is 6318786682.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1258875 + ... + 1281445.

Almost surely, 2^28668781360 is an apocalyptic number.

28668781360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28668781360 is an abundant number, since it is smaller than the sum of its proper divisors (37993286816).

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

28668781360 is a wasteful number, since it uses less digits than its factorization.

28668781360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38461 (or 38455 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 28668781360 in words is "twenty-eight billion, six hundred sixty-eight million, seven hundred eighty-one thousand, three hundred sixty".