28628335660 has 12 divisors (see below), whose sum is σ = 60119504928. Its totient is φ = 11451334256.

The previous prime is 28628335627. The next prime is 28628335661. The reversal of 28628335660 is 6653382682.

It is not an unprimeable number, because it can be changed into a prime (28628335661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 715708372 + ... + 715708411.

It is an arithmetic number, because the mean of its divisors is an integer number (5009958744).

Almost surely, 2^28628335660 is an apocalyptic number.

28628335660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28628335660 is an abundant number, since it is smaller than the sum of its proper divisors (31491169268).

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

28628335660 is a wasteful number, since it uses less digits than its factorization.

28628335660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431416792 (or 1431416790 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 28628335660 in words is "twenty-eight billion, six hundred twenty-eight million, three hundred thirty-five thousand, six hundred sixty".