28066787020 has 12 divisors (see below), whose sum is σ = 58940252784. Its totient is φ = 11226714800.

The previous prime is 28066787017. The next prime is 28066787029. The reversal of 28066787020 is 2078766082.

It is not an unprimeable number, because it can be changed into a prime (28066787029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 701669656 + ... + 701669695.

It is an arithmetic number, because the mean of its divisors is an integer number (4911687732).

Almost surely, 2^28066787020 is an apocalyptic number.

28066787020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28066787020 is an abundant number, since it is smaller than the sum of its proper divisors (30873465764).

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

28066787020 is a wasteful number, since it uses less digits than its factorization.

28066787020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403339360 (or 1403339358 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 28066787020 in words is "twenty-eight billion, sixty-six million, seven hundred eighty-seven thousand, twenty".