28891279012650 has 48 divisors (see below), whose sum is σ = 71746806106944. Its totient is φ = 7693971806080.

The previous prime is 28891279012619. The next prime is 28891279012663. The reversal of 28891279012650 is 5621097219882.

28891279012650 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129503979 + ... + 129726878.

It is an arithmetic number, because the mean of its divisors is an integer number (1494725127228).

Almost surely, 2^{28891279012650} is an apocalyptic number.

28891279012650 is an abundant number, since it is smaller than the sum of its proper divisors (42855527094294).

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

28891279012650 is a wasteful number, since it uses less digits than its factorization.

28891279012650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259231615 (or 259231610 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 28891279012650 in words is "twenty-eight trillion, eight hundred ninety-one billion, two hundred seventy-nine million, twelve thousand, six hundred fifty".