28730093 has 8 divisors (see below), whose sum is σ = 33722112. Its totient is φ = 23960016.

The previous prime is 28730089. The next prime is 28730123. The reversal of 28730093 is 39003782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28730093 - 2² = 28730089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55205 + ... + 55722.

It is an arithmetic number, because the mean of its divisors is an integer number (4215264).

Almost surely, 2^28730093 is an apocalyptic number.

It is an amenable number.

28730093 is a deficient number, since it is larger than the sum of its proper divisors (4992019).

28730093 is a wasteful number, since it uses less digits than its factorization.

28730093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110971.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 28730093 is about 5360.0459886087. The cubic root of 28730093 is about 306.2755609375.

The spelling of 28730093 in words is "twenty-eight million, seven hundred thirty thousand, ninety-three".