28082620840 has 64 divisors (see below), whose sum is σ = 63501148800. Its totient is φ = 11177117952.

The previous prime is 28082620829. The next prime is 28082620849. The reversal of 28082620840 is 4802628082.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 28082620793 and 28082620802.

It is not an unprimeable number, because it can be changed into a prime (28082620849) 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 15 ways as a sum of consecutive naturals, for example, 14019279 + ... + 14021281.

It is an arithmetic number, because the mean of its divisors is an integer number (992205450).

Almost surely, 2^28082620840 is an apocalyptic number.

28082620840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28082620840 is an abundant number, since it is smaller than the sum of its proper divisors (35418527960).

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

28082620840 is a wasteful number, since it uses less digits than its factorization.

28082620840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586 (or 3582 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 28082620840 in words is "twenty-eight billion, eighty-two million, six hundred twenty thousand, eight hundred forty".