28693871850 has 96 divisors (see below), whose sum is σ = 83524761216. Its totient is φ = 6381331200.

The previous prime is 28693871831. The next prime is 28693871891. The reversal of 28693871850 is 5817839682.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330441 + ... + 408140.

It is an arithmetic number, because the mean of its divisors is an integer number (870049596).

Almost surely, 2^28693871850 is an apocalyptic number.

28693871850 is an abundant number, since it is smaller than the sum of its proper divisors (54830889366).

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

28693871850 is a wasteful number, since it uses less digits than its factorization.

28693871850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738640 (or 738635 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 28693871850 in words is "twenty-eight billion, six hundred ninety-three million, eight hundred seventy-one thousand, eight hundred fifty".