28438686857335 has 16 divisors (see below), whose sum is σ = 34133648224896. Its totient is φ = 22746134009088.

The previous prime is 28438686857327. The next prime is 28438686857389. The reversal of 28438686857335 is 53375868683482.

It is a cyclic number.

It is not a de Polignac number, because 28438686857335 - 2³ = 28438686857327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788346859 + ... + 788382931.

It is an arithmetic number, because the mean of its divisors is an integer number (2133353014056).

Almost surely, 2^{28438686857335} is an apocalyptic number.

28438686857335 is a deficient number, since it is larger than the sum of its proper divisors (5694961367561).

28438686857335 is a wasteful number, since it uses less digits than its factorization.

28438686857335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65082.

The product of its digits is 5573836800, while the sum is 76.

The spelling of 28438686857335 in words is "twenty-eight trillion, four hundred thirty-eight billion, six hundred eighty-six million, eight hundred fifty-seven thousand, three hundred thirty-five".