28614918540 has 48 divisors (see below), whose sum is σ = 86284987488. Its totient is φ = 7043672064.

The previous prime is 28614918509. The next prime is 28614918587. The reversal of 28614918540 is 4581941682.

It is a self number, because there is not a number n which added to its sum of digits gives 28614918540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18342117 + ... + 18343676.

It is an arithmetic number, because the mean of its divisors is an integer number (1797603906).

Almost surely, 2^28614918540 is an apocalyptic number.

28614918540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28614918540 is an abundant number, since it is smaller than the sum of its proper divisors (57670068948).

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

28614918540 is a wasteful number, since it uses less digits than its factorization.

28614918540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36685818 (or 36685816 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 28614918540 in words is "twenty-eight billion, six hundred fourteen million, nine hundred eighteen thousand, five hundred forty".