28774671798 has 16 divisors (see below), whose sum is σ = 59533804080. Its totient is φ = 9260813856.

The previous prime is 28774671787. The next prime is 28774671823. The reversal of 28774671798 is 89717647782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82685665 + ... + 82686012.

It is an arithmetic number, because the mean of its divisors is an integer number (3720862755).

Almost surely, 2^28774671798 is an apocalyptic number.

28774671798 is an abundant number, since it is smaller than the sum of its proper divisors (30759132282).

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

28774671798 is a wasteful number, since it uses less digits than its factorization.

28774671798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165371711.

The product of its digits is 66382848, while the sum is 66.

The spelling of 28774671798 in words is "twenty-eight billion, seven hundred seventy-four million, six hundred seventy-one thousand, seven hundred ninety-eight".