28866000388 has 48 divisors (see below), whose sum is σ = 51372921600. Its totient is φ = 14190743840.

The previous prime is 28866000377. The next prime is 28866000389. The reversal of 28866000388 is 88300066882.

It is not an unprimeable number, because it can be changed into a prime (28866000389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43802403 + ... + 43803061.

It is an arithmetic number, because the mean of its divisors is an integer number (1070269200).

Almost surely, 2^28866000388 is an apocalyptic number.

It is an amenable number.

28866000388 is a deficient number, since it is larger than the sum of its proper divisors (22506921212).

28866000388 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (28866000387) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (1440).

28866000388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 28866000388 in words is "twenty-eight billion, eight hundred sixty-six million, three hundred eighty-eight", and thus it is an aban number.