28956890122 has 8 divisors (see below), whose sum is σ = 43436719872. Its totient is φ = 14477983500.

The previous prime is 28956890119. The next prime is 28956890167. The reversal of 28956890122 is 22109865982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28956890122.

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 3 ways as a sum of consecutive naturals, for example, 146154 + ... + 281557.

It is an arithmetic number, because the mean of its divisors is an integer number (5429589984).

Almost surely, 2^28956890122 is an apocalyptic number.

28956890122 is a deficient number, since it is larger than the sum of its proper divisors (14479829750).

28956890122 is a wasteful number, since it uses less digits than its factorization.

28956890122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461564.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 28956890122 in words is "twenty-eight billion, nine hundred fifty-six million, eight hundred ninety thousand, one hundred twenty-two".