28622644622 has 24 divisors (see below), whose sum is σ = 50822031288. Its totient is φ = 12009499920.

The previous prime is 28622644613. The next prime is 28622644709. The reversal of 28622644622 is 22644622682.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4545908 + ... + 4552199.

It is an arithmetic number, because the mean of its divisors is an integer number (2117584637).

Almost surely, 2^28622644622 is an apocalyptic number.

28622644622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28622644622 is a deficient number, since it is larger than the sum of its proper divisors (22199386666).

28622644622 is a wasteful number, since it uses less digits than its factorization.

28622644622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098144 (or 9098133 counting only the distinct ones).

The product of its digits is 884736, while the sum is 44.

The spelling of 28622644622 in words is "twenty-eight billion, six hundred twenty-two million, six hundred forty-four thousand, six hundred twenty-two".