28085577436 has 24 divisors (see below), whose sum is σ = 56175406560. Its totient is φ = 12035764992.

The previous prime is 28085577431. The next prime is 28085577467. The reversal of 28085577436 is 63477558082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28085577431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447480 + ... + 506368.

It is an arithmetic number, because the mean of its divisors is an integer number (2340641940).

Almost surely, 2^28085577436 is an apocalyptic number.

It is an amenable number.

28085577436 is an abundant number, since it is smaller than the sum of its proper divisors (28089829124).

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

28085577436 is a wasteful number, since it uses less digits than its factorization.

28085577436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75933 (or 75931 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 28085577436 in words is "twenty-eight billion, eighty-five million, five hundred seventy-seven thousand, four hundred thirty-six".