28635528302808 has 128 divisors (see below), whose sum is σ = 83516365440000. Its totient is φ = 8178555221760.

The previous prime is 28635528302803. The next prime is 28635528302809. The reversal of 28635528302808 is 80820382553682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28635528302803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21675388 + ... + 22958516.

It is an arithmetic number, because the mean of its divisors is an integer number (652471605000).

Almost surely, 2^{28635528302808} is an apocalyptic number.

28635528302808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28635528302808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41758182720000).

28635528302808 is an abundant number, since it is smaller than the sum of its proper divisors (54880837137192).

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

28635528302808 is a wasteful number, since it uses less digits than its factorization.

28635528302808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285870 (or 1285852 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 60.

The spelling of 28635528302808 in words is "twenty-eight trillion, six hundred thirty-five billion, five hundred twenty-eight million, three hundred two thousand, eight hundred eight".