28705435706 has 8 divisors (see below), whose sum is σ = 44930247264. Its totient is φ = 13728686620.

The previous prime is 28705435699. The next prime is 28705435723. The reversal of 28705435706 is 60753450782.

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

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, 312015560 + ... + 312015651.

It is an arithmetic number, because the mean of its divisors is an integer number (5616280908).

Almost surely, 2^28705435706 is an apocalyptic number.

28705435706 is a deficient number, since it is larger than the sum of its proper divisors (16224811558).

28705435706 is a wasteful number, since it uses less digits than its factorization.

28705435706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624031236.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 28705435706 in words is "twenty-eight billion, seven hundred five million, four hundred thirty-five thousand, seven hundred six".