28616750838 has 24 divisors (see below), whose sum is σ = 66772419168. Its totient is φ = 8805154032.

The previous prime is 28616750831. The next prime is 28616750849. The reversal of 28616750838 is 83805761682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28616750831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61146670 + ... + 61147137.

It is an arithmetic number, because the mean of its divisors is an integer number (2782184132).

Almost surely, 2^28616750838 is an apocalyptic number.

28616750838 is an abundant number, since it is smaller than the sum of its proper divisors (38155668330).

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

28616750838 is a wasteful number, since it uses less digits than its factorization.

28616750838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122293828 (or 122293825 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 28616750838 in words is "twenty-eight billion, six hundred sixteen million, seven hundred fifty thousand, eight hundred thirty-eight".