28818395516 has 6 divisors (see below), whose sum is σ = 50432192160. Its totient is φ = 14409197756.

The previous prime is 28818395503. The next prime is 28818395519. The reversal of 28818395516 is 61559381882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28818395519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602299436 + ... + 3602299443.

It is an arithmetic number, because the mean of its divisors is an integer number (8405365360).

Almost surely, 2^28818395516 is an apocalyptic number.

It is an amenable number.

28818395516 is a deficient number, since it is larger than the sum of its proper divisors (21613796644).

28818395516 is a wasteful number, since it uses less digits than its factorization.

28818395516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204598883 (or 7204598881 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 56.

The spelling of 28818395516 in words is "twenty-eight billion, eight hundred eighteen million, three hundred ninety-five thousand, five hundred sixteen".