28757365838 has 8 divisors (see below), whose sum is σ = 43137566688. Its totient is φ = 14378176944.

The previous prime is 28757365799. The next prime is 28757365841. The reversal of 28757365838 is 83856375782.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177431 + ... + 298322.

It is an arithmetic number, because the mean of its divisors is an integer number (5392195836).

Almost surely, 2^28757365838 is an apocalyptic number.

28757365838 is a deficient number, since it is larger than the sum of its proper divisors (14380200850).

28757365838 is a wasteful number, since it uses less digits than its factorization.

28757365838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505978.

The product of its digits is 67737600, while the sum is 62.

The spelling of 28757365838 in words is "twenty-eight billion, seven hundred fifty-seven million, three hundred sixty-five thousand, eight hundred thirty-eight".