28568750 has 48 divisors (see below), whose sum is σ = 61308576. Its totient is φ = 9780000.

The previous prime is 28568717. The next prime is 28568779. The reversal of 28568750 is 5786582.

It is a junction number, because it is equal to n+sod(n) for n = 28568698 and 28568707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43424 + ... + 44076.

It is an arithmetic number, because the mean of its divisors is an integer number (1277262).

Almost surely, 2^28568750 is an apocalyptic number.

28568750 is an abundant number, since it is smaller than the sum of its proper divisors (32739826).

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

28568750 is an frugal number, since it uses more digits than its factorization.

28568750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 28568750 is about 5344.9742749615. The cubic root of 28568750 is about 305.7011549747.

The spelling of 28568750 in words is "twenty-eight million, five hundred sixty-eight thousand, seven hundred fifty".