28002802782 has 32 divisors (see below), whose sum is σ = 57216545280. Its totient is φ = 9134536320.

The previous prime is 28002802769. The next prime is 28002802787. The reversal of 28002802782 is 28720820082.

It is a self number, because there is not a number n which added to its sum of digits gives 28002802782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002802787) 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, 207844 + ... + 314967.

It is an arithmetic number, because the mean of its divisors is an integer number (1788017040).

Almost surely, 2^28002802782 is an apocalyptic number.

28002802782 is an abundant number, since it is smaller than the sum of its proper divisors (29213742498).

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

28002802782 is a wasteful number, since it uses less digits than its factorization.

28002802782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523008.

The product of its (nonzero) digits is 57344, while the sum is 39.

The spelling of 28002802782 in words is "twenty-eight billion, two million, eight hundred two thousand, seven hundred eighty-two".