28063307780 has 24 divisors (see below), whose sum is σ = 59812545408. Its totient is φ = 11057780448.

The previous prime is 28063307759. The next prime is 28063307809. The reversal of 28063307780 is 8770336082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10470044 + ... + 10472723.

It is an arithmetic number, because the mean of its divisors is an integer number (2492189392).

Almost surely, 2^28063307780 is an apocalyptic number.

28063307780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28063307780 is an abundant number, since it is smaller than the sum of its proper divisors (31749237628).

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

28063307780 is a wasteful number, since it uses less digits than its factorization.

28063307780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20942843 (or 20942841 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 28063307780 in words is "twenty-eight billion, sixty-three million, three hundred seven thousand, seven hundred eighty".