28265662650 has 24 divisors (see below), whose sum is σ = 70098843744. Its totient is φ = 7537510000.

The previous prime is 28265662643. The next prime is 28265662661. The reversal of 28265662650 is 5626656282.

It is a self number, because there is not a number n which added to its sum of digits gives 28265662650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94218726 + ... + 94219025.

It is an arithmetic number, because the mean of its divisors is an integer number (2920785156).

Almost surely, 2^28265662650 is an apocalyptic number.

28265662650 is an abundant number, since it is smaller than the sum of its proper divisors (41833181094).

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

28265662650 is a wasteful number, since it uses less digits than its factorization.

28265662650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188437766 (or 188437761 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 28265662650 in words is "twenty-eight billion, two hundred sixty-five million, six hundred sixty-two thousand, six hundred fifty".