28866688880442 has 32 divisors (see below), whose sum is σ = 66070287398400. Its totient is φ = 8236464864048.

The previous prime is 28866688880399. The next prime is 28866688880453. The reversal of 28866688880442 is 24408888666882.

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, 464990692 + ... + 465052767.

It is an arithmetic number, because the mean of its divisors is an integer number (2064696481200).

Almost surely, 2^{28866688880442} is an apocalyptic number.

28866688880442 is an abundant number, since it is smaller than the sum of its proper divisors (37203598517958).

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

28866688880442 is a wasteful number, since it uses less digits than its factorization.

28866688880442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930044210.

The product of its (nonzero) digits is 3623878656, while the sum is 78.

The spelling of 28866688880442 in words is "twenty-eight trillion, eight hundred sixty-six billion, six hundred eighty-eight million, eight hundred eighty thousand, four hundred forty-two".