28684780622 has 4 divisors (see below), whose sum is σ = 43027170936. Its totient is φ = 14342390310.

The previous prime is 28684780583. The next prime is 28684780627. The reversal of 28684780622 is 22608748682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28684780627) by changing a digit.

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 as a sum of consecutive naturals, namely, 7171195154 + ... + 7171195157.

It is an arithmetic number, because the mean of its divisors is an integer number (10756792734).

Almost surely, 2^28684780622 is an apocalyptic number.

28684780622 is a deficient number, since it is larger than the sum of its proper divisors (14342390314).

28684780622 is a wasteful number, since it uses less digits than its factorization.

28684780622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14342390313.

The product of its (nonzero) digits is 4128768, while the sum is 53.

The spelling of 28684780622 in words is "twenty-eight billion, six hundred eighty-four million, seven hundred eighty thousand, six hundred twenty-two".