28088707652 has 6 divisors (see below), whose sum is σ = 49155238398. Its totient is φ = 14044353824.

The previous prime is 28088707649. The next prime is 28088707667. The reversal of 28088707652 is 25670788082.

It can be written as a sum of positive squares in only one way, i.e., 22633998916 + 5454708736 = 150446^2 + 73856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28088707594 and 28088707603.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3511088453 + ... + 3511088460.

It is an arithmetic number, because the mean of its divisors is an integer number (8192539733).

Almost surely, 2^28088707652 is an apocalyptic number.

It is an amenable number.

28088707652 is a deficient number, since it is larger than the sum of its proper divisors (21066530746).

28088707652 is a wasteful number, since it uses less digits than its factorization.

28088707652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7022176917 (or 7022176915 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 28088707652 in words is "twenty-eight billion, eighty-eight million, seven hundred seven thousand, six hundred fifty-two".