28082077782 has 16 divisors (see below), whose sum is σ = 61269988032. Its totient is φ = 8509720520.

The previous prime is 28082077717. The next prime is 28082077783. The reversal of 28082077782 is 28777028082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28082077783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212742948 + ... + 212743079.

It is an arithmetic number, because the mean of its divisors is an integer number (3829374252).

Almost surely, 2^28082077782 is an apocalyptic number.

28082077782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28082077782 is an abundant number, since it is smaller than the sum of its proper divisors (33187910250).

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

28082077782 is a wasteful number, since it uses less digits than its factorization.

28082077782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425486043.

The product of its (nonzero) digits is 1404928, while the sum is 51.

The spelling of 28082077782 in words is "twenty-eight billion, eighty-two million, seventy-seven thousand, seven hundred eighty-two".