28644654822 has 32 divisors (see below), whose sum is σ = 67731206400. Its totient is φ = 7901973408.

The previous prime is 28644654803. The next prime is 28644654839. The reversal of 28644654822 is 22845644682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11757672 + ... + 11760107.

It is an arithmetic number, because the mean of its divisors is an integer number (2116600200).

Almost surely, 2^28644654822 is an apocalyptic number.

28644654822 is an abundant number, since it is smaller than the sum of its proper divisors (39086551578).

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

28644654822 is a wasteful number, since it uses less digits than its factorization.

28644654822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23517820.

The product of its digits is 5898240, while the sum is 51.

The spelling of 28644654822 in words is "twenty-eight billion, six hundred forty-four million, six hundred fifty-four thousand, eight hundred twenty-two".