28217350986 has 32 divisors (see below), whose sum is σ = 61578897408. Its totient is φ = 8548800240.

The previous prime is 28217350979. The next prime is 28217350991. The reversal of 28217350986 is 68905371282.

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 15 ways as a sum of consecutive naturals, for example, 264945 + ... + 355851.

It is an arithmetic number, because the mean of its divisors is an integer number (1924340544).

Almost surely, 2^28217350986 is an apocalyptic number.

28217350986 is an abundant number, since it is smaller than the sum of its proper divisors (33361546422).

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

28217350986 is a wasteful number, since it uses less digits than its factorization.

28217350986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95626.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 28217350986 in words is "twenty-eight billion, two hundred seventeen million, three hundred fifty thousand, nine hundred eighty-six".