28730750 has 32 divisors (see below), whose sum is σ = 55115424. Its totient is φ = 11208000.

The previous prime is 28730729. The next prime is 28730761. The reversal of 28730750 is 5703782.

It is a Curzon number.

It is a congruent number.

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, 8849 + ... + 11651.

It is an arithmetic number, because the mean of its divisors is an integer number (1722357).

Almost surely, 2^28730750 is an apocalyptic number.

28730750 is a deficient number, since it is larger than the sum of its proper divisors (26384674).

28730750 is a wasteful number, since it uses less digits than its factorization.

28730750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2851 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 28730750 is about 5360.1072750459. The cubic root of 28730750 is about 306.2778955570.

The spelling of 28730750 in words is "twenty-eight million, seven hundred thirty thousand, seven hundred fifty".